f:Observation partOf: maximum cardinality of 'partOf' is 0 subject: minimum cardinality of 'subject' is 1 performer: maximum cardinality of 'performer' is 0 bodySite: maximum cardinality of 'bodySite' is 0 method: maximum cardinality of 'method' is 0 device: maximum cardinality of 'device' is 0 hasMember: maximum cardinality of 'hasMember' is 0 component: maximum cardinality of 'component' is 0