Note: you are viewing the development version of schema.org. See How we work for more details.

CommentAction

Thing > Action > InteractAction > CommunicateAction > CommentAction

The act of generating a comment about a subject.
PropertyExpected TypeDescription
Properties from CommentAction
resultComment Comment A sub property of result. The Comment created or sent as a result of this action.
Properties from CommunicateAction
about Thing The subject matter of the content.
Inverse property: subjectOf.
inLanguage Language  or
Text 
The language of the content or performance or used in an action. Please use one of the language codes from the IETF BCP 47 standard. See also availableLanguage. Supersedes language.
recipient Audience  or
ContactPoint  or
Organization  or
Person 
A sub property of participant. The participant who is at the receiving end of the action.
Properties from Action
actionStatus ActionStatusType Indicates the current disposition of the Action.
agent Organization  or
Person 
The direct performer or driver of the action (animate or inanimate). e.g. John wrote a book.
endTime DateTime  or
Time 
The endTime of something. For a reserved event or service (e.g. FoodEstablishmentReservation), the time that it is expected to end. For actions that span a period of time, when the action was performed. e.g. John wrote a book from January to December. For media, including audio and video, it's the time offset of the end of a clip within a larger file.

Note that Event uses startDate/endDate instead of startTime/endTime, even when describing dates with times. This situation may be clarified in future revisions.
error Thing For failed actions, more information on the cause of the failure.
instrument Thing The object that helped the agent perform the action. e.g. John wrote a book with a pen.
location Place  or
PostalAddress  or
Text 
The location of for example where the event is happening, an organization is located, or where an action takes place.
object Thing The object upon which the action is carried out, whose state is kept intact or changed. Also known as the semantic roles patient, affected or undergoer (which change their state) or theme (which doesn't). e.g. John read a book.
participant Organization  or
Person 
Other co-agents that participated in the action indirectly. e.g. John wrote a book with Steve.
result Thing The result produced in the action. e.g. John wrote a book.
startTime DateTime  or
Time 
The startTime of something. For a reserved event or service (e.g. FoodEstablishmentReservation), the time that it is expected to start. For actions that span a period of time, when the action was performed. e.g. John wrote a book from January to December. For media, including audio and video, it's the time offset of the start of a clip within a larger file.

Note that Event uses startDate/endDate instead of startTime/endTime, even when describing dates with times. This situation may be clarified in future revisions.
target EntryPoint Indicates a target EntryPoint for an Action.
Properties from Thing
additionalType URL An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally.
alternateName Text An alias for the item.
description Text A description of the item.
disambiguatingDescription Text A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
identifier PropertyValue  or
Text  or
URL 
The identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.
image ImageObject  or
URL 
An image of the item. This can be a URL or a fully described ImageObject.
mainEntityOfPage CreativeWork  or
URL 
Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details.
Inverse property: mainEntity.
name Text The name of the item.
potentialAction Action Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
sameAs URL URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.
subjectOf CreativeWork  or
Event 
A CreativeWork or Event about this Thing.
Inverse property: about.
url URL URL of the item.
Examples

Example 1
John commented on a blog post.
This example is JSON only.
This example is JSON only.
<!-- John commented on a blog post. -->
<script type="application/ld+json">
{
  "@context": "http://schema.org",
  "@type": "CommentAction",
  "agent": {
    "@type": "Person",
    "name": "John"
  },
  "resultComment": {
    "@type": "Comment",
    "text": "That's cool!"
  },
  "about": {
    "@type": "ScholarlyArticle",
    "name": "We found that P = NP!"
  }
}
</script>