Question: who sings lead on i wish it would rain
[{'answer': 'David Ruffin', 'provenance': [{'wikipedia_id': '2507441', 'title': 'I Wish It Would Rain', 'start_paragraph_id': 4, 'start_character': 87, 'end_paragraph_id': 4, 'end_character': 99, 'bleu_score': 1.0, 'section': 'Section::::Overview.:Background.\n'}]}, {'provenance': [{'wikipedia_id': '2507441', 'title': 'I Wish It Would Rain', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 993, 'bleu_score': 0.972902212337693, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15218891745892943676}, 'section': 'Section::::Overview.:Background.\n'}]}]