Source: Schema.org v30.1 vocabulary. Official participant property definition.
What does participant mean?
Other co-agents that participated in the action indirectly. E.g. John wrote a book with *Steve*.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status