@namespace(uri="personshouses", prefix="")
package personshouses;

import "http://persons";
import "http://houses";

class PersonHouseRelationshipGroup {
	val PersonHouseRelationship[*] personHouseRelationships;
}

class PersonHouseRelationship {
	ref houses.House house;
	ref persons.Person person;
	attr PersonHouseRelationshipType type;
}

enum PersonHouseRelationshipType {
	Owns;
	Lets;
}