Question: who sang the theme song for here come the brides
[{'answer': 'Perry Como', 'provenance': [{'wikipedia_id': '1202584', 'title': 'Here Come the Brides', 'start_paragraph_id': 51, 'start_character': 76, 'end_paragraph_id': 51, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Music.\n'}]}, {'answer': 'Bobby Sherman', 'provenance': [{'wikipedia_id': '1202584', 'title': 'Here Come the Brides', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Plot summary.\n'}]}, {'answer': "`` The New Establishment ''"}, {'provenance': [{'wikipedia_id': '1202584', 'title': 'Here Come the Brides', 'start_paragraph_id': 51, 'start_character': 0, 'end_paragraph_id': 51, 'end_character': 1190, 'bleu_score': 0.919310217318634, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6619334511093771188}, 'section': 'Section::::Music.\n'}]}]