Question: when did the song push it come out
[{'answer': '1987', 'provenance': [{'wikipedia_id': '3022837', 'title': 'Push It (Salt-n-Pepa song)', 'start_paragraph_id': 1, 'start_character': 101, 'end_paragraph_id': 1, 'end_character': 105, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'March 8 , 1987'}, {'provenance': [{'wikipedia_id': '3022837', 'title': 'Push It (Salt-n-Pepa song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 618, 'bleu_score': 0.8114189530672721, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11318601399120438129}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3022837', 'title': 'Push It (Salt-n-Pepa song)', 'section': 'Section::::Release history.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['The original version of "Push It" was first released as the B-side to the 12" single "Tramp" in 1987.', 'The original version of "Push It" was first released as the B-side to the 12" single "Tramp" in 1987', 'The original version of "Push It" was first released as the B-side to the 12" single "Tramp" in 1987']}}]}, {'provenance': [{'wikipedia_id': '3022837', 'title': 'Push It (Salt-n-Pepa song)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['"Push It" is a song by the group Salt-n-Pepa. It was released as the B-side of the "Tramp" single in 1987, and as its own single in 1988. I', '"Push It" is a song by the group Salt-n-Pepa. It was released as the B-side of the "Tramp" single in 1987, and as its own single in 1988.', 'Push It" is a song by the group Salt-n-Pepa. It was released as the B-side of the "Tramp" single in 1987, and as its own single in 1988']}}]}]