Class Property
2 typesschema.org
Date the content expires and is no longer useful or available. For example a [VideoObject](https://schema.org/VideoObject) or [NewsArticle](https://schema.org/NewsArticle) whose availability or relevance is time-limited, a [ClaimReview](https://schema.org/ClaimReview) fact check whose publisher wants to indicate that it may no longer be relevant (or helpful to highlight) after some date, or a [Certification](https://schema.org/Certification) the validity has expired.
Class Property
1 typeschema.org
A work that is a translation of the content of this work. E.g. 西遊記 has an English workTranslation “Journey to the West”, a German workTranslation “Monkeys Pilgerfahrt” and a Vietnamese translation Tây du ký bình khảo.
Class Property
2 typesschema.org
Associates an [Event](https://schema.org/Event) with a [Schedule](https://schema.org/Schedule). There are circumstances where it is preferable to share a schedule for a series of repeating events rather than data on the individual events themselves. For example, a website or application might prefer to publish a schedule for a weekly gym class rather than provide data on every event. A schedule could be processed by applications to add forthcoming events to a calendar. An [Event](https://schema.org/Event) that is associated with a [Schedule](https://schema.org/Schedule) using this property should not have [startDate](https://schema.org/startDate) or [endDate](https://schema.org/endDate) properties. These are instead defined within the associated [Schedule](https://schema.org/Schedule), this avoids any ambiguity for clients using the data. The property might have repeated values to specify different schedules, e.g. for different months or seasons.
Class Property
1 typeschema.org
The maximum physical attendee capacity of an [Event](https://schema.org/Event) whose [eventAttendanceMode](https://schema.org/eventAttendanceMode) is [OfflineEventAttendanceMode](https://schema.org/OfflineEventAttendanceMode) (or the offline aspects, in the case of a [MixedEventAttendanceMode](https://schema.org/MixedEventAttendanceMode)).
Class Property
1 typeschema.org
The maximum virtual attendee capacity of an [Event](https://schema.org/Event) whose [eventAttendanceMode](https://schema.org/eventAttendanceMode) is [OnlineEventAttendanceMode](https://schema.org/OnlineEventAttendanceMode) (or the online aspects, in the case of a [MixedEventAttendanceMode](https://schema.org/MixedEventAttendanceMode)).
Class Property
3 typesschema.org
The identifier property represents any kind of identifier for any kind of [Thing](https://schema.org/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](https://schema.org/docs/datamodel.html#identifierBg) for more details.