Question: song played at the end of iron man 2
[{'answer': 'Highway to Hell', 'provenance': [{'wikipedia_id': '25958811', 'title': 'Iron Man 2 (soundtrack)', 'start_paragraph_id': 4, 'start_character': 841, 'end_paragraph_id': 4, 'end_character': 856, 'bleu_score': 1.0, 'section': 'Section::::"Iron Man 2".:Background.\n'}]}]