Question: who was the lead singer of human league
[{'answer': 'Philip Oakey', 'provenance': [{'wikipedia_id': '1433280', 'title': 'Philip Oakey', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1433280', 'title': 'Philip Oakey', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 326, 'bleu_score': 0.819153305798031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16023752732864144106}, 'section': 'Section::::Abstract.'}]}]