foaf

{'*': 'https://json-ld.org/contexts/person.jsonld',
 'url': {'*': 'https://www.w3.org/ns/json-ld#id'},
 'fullname': {'*': 'http://xmlns.com/foaf/0.1/name'},
 'birthdate': {'*': 'http://schema.org/birthDate|to.isodate'},
 'spouse': {'*': 'http://schema.org/spouse'}}

jsonld-person

{'*': 'https://json-ld.org/contexts/person.jsonld',
 'url': {'*': '@id'},
 'fullname': {'*': 'name'},
 'birthdate': {'*': 'born'},
 'spouse': {'*': 'spouse'}}