Question: when was the last time anyone was on the moon
[{'answer': 'December 1972'}, {'answer': '14 December 1972 UTC', 'provenance': [{'wikipedia_id': '1558077', 'title': 'Moon landing', 'start_paragraph_id': 13, 'start_character': 265, 'end_paragraph_id': 13, 'end_character': 285, 'bleu_score': 1.0, 'section': 'Section::::Crewed landings.\n'}]}, {}, {'provenance': [{'wikipedia_id': '1558077', 'title': 'Moon landing', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 383, 'bleu_score': 0.8951543634794661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14170666770079924011}, 'section': 'Section::::Crewed landings.\n'}]}, {'provenance': [{'wikipedia_id': '1558077', 'title': 'Moon landing', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14170666770079924011}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1970', 'title': 'Apollo 16', 'section': 'Section::::Spacecraft locations.\n', 'start_paragraph_id': 55, 'end_paragraph_id': 55, 'meta': {'evidence_span': ['Duke donated some flown items, including a lunar map, to Kennesaw State University in Kennesaw, Georgia. He left two items on the Moon, both of which he photographed. The most famous is a plastic-encased photo portrait of his family (NASA Photo AS16-117-18841). The reverse of the photo is signed by Duke\'s family and bears this message: "This is the family of Astronaut Duke from Planet Earth. Landed on the Moon, April 1972." The other item was a commemorative medal issued by the United States Air Force, which was celebrating its 25th anniversary in 1972. He took two medals, leaving one on the Moon and donating the other to the Wright-Patterson Air Force Base museum.', 'Duke donated some flown items, including a lunar map, to Kennesaw State University in Kennesaw, Georgia. He left two items on the Moon, both of which he photographed. The most famous is a plastic-encased photo portrait of his family (NASA Photo AS16-117-18841). The reverse of the photo is signed by Duke\'s family and bears this message: "This is the family of Astronaut Duke from Planet Earth. Landed on the Moon, April 1972." The other item was a commemorative medal issued by the United States Air Force, which was celebrating its 25th anniversary in 1972. He took two medals, leaving one on the Moon and donating the other to the Wright-Patterson Air Force Base museum.', 'Duke donated some flown items, including a lunar map, to Kennesaw State University in Kennesaw, Georgia. He left two items on the Moon, both of which he photographed. The most famous is a plastic-encased photo portrait of his family (NASA Photo AS16-117-18841). The reverse of the photo is signed by Duke\'s family and bears this message: "This is the family of Astronaut Duke from Planet Earth. Landed on the Moon, April 1972." The other item was a commemorative medal issued by the United States Air Force, which was celebrating its 25th anniversary in 1972. He took two medals, leaving one on the Moon and donating the other to the Wright-Patterson Air Force Base museum.']}}]}]