date on which the subject was born

the object is a country that recognizes the subject as its citizen

most specific known birth location of a person, animal or fictional character

musical instrument that a person plays or teaches or used in a music occupation

object of which the subject is a part (if this subject is already part of object A which is a part of object B, then please only make the subject part of object A), inverse property of "has part" (P527, see also "has parts of the class" (P2670))