Question: who sang wish you were here pink floyd
[{'answer': 'David Gilmour', 'provenance': [{'wikipedia_id': '30220496', 'title': 'Wish You Were Here (Pink Floyd song)', 'start_paragraph_id': 1, 'start_character': 89, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30220496', 'title': 'Wish You Were Here (Pink Floyd song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 184, 'bleu_score': 0.9419661180380051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6669649073467339454}, 'section': 'Section::::Abstract.'}]}]