Question: what was u2's lead single from 'the joshua tree'
[{'answer': 'With or Without You', 'provenance': [{'wikipedia_id': '238967', 'title': 'The Joshua Tree', 'start_paragraph_id': 3, 'start_character': 269, 'end_paragraph_id': 3, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '238967', 'title': 'The Joshua Tree', 'start_paragraph_id': 46, 'start_character': 0, 'end_paragraph_id': 46, 'end_character': 1030, 'bleu_score': 0.9892757519056121, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2329875141840109352}, 'section': 'Section::::Release.\n'}]}]