This task is about using the specified sentence and converting the sentence to Resource Description Framework (RDF) triplets of the form (subject, predicate object). The RDF triplets generated must be such that the triplets accurately capture the structure and semantics of the input sentence. The input is a sentence and the output is a list of triplets of the form [subject, predicate, object] that capture the relationships present in the sentence. When a sentence has more than 1 RDF triplet possible, the output must contain all of them.

Alan Shepard was an American born on Nov 18, 1923 in New Hampshire. He attend NWC and graduated with an MA in 1957. He was a member of Apollo 14. Shepard retired on Aug 1, 1974 and later died in California.
[['Alan Shepard', 'ALMA_MATER', '"NWC, M.A. 1957"'], ['Alan Shepard', 'WAS_A_CREW_MEMBER_OF', 'Apollo 14'], ['Alan Shepard', 'DEATH_PLACE', 'California'], ['Alan Shepard', 'BIRTH_PLACE', 'New Hampshire'], ['Alan Shepard', 'DATE_OF_RETIREMENT', '"1974-08-01"'], ['Alan Shepard', 'NATIONALITY', 'United States'], ['Alan Shepard', 'DATE_OF_BIRTH', '"1923-11-18"']]