Where used: Object Type And Relation Model

hasParticipantCardinality / participantCardinalityFor

Place hasParticipantCardinality Place Cardinality

Place Cardinality participantCardinalityFor Place

Gives the number of participants that can be in a particular place of a
relation.  For example, a marriage may have exactly one husband.  It has
a minimum and maximum that must be non-negative integers.