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