Question: what fort supplied the cannon used to relieve the siege of boston
[{'answer': 'Fort Ticonderoga', 'provenance': [{'wikipedia_id': '239035', 'title': 'Siege of Boston', 'start_paragraph_id': 3, 'start_character': 152, 'end_paragraph_id': 3, 'end_character': 168, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '239035', 'title': 'Siege of Boston', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 613, 'bleu_score': 0.895301299792273, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16450310254994788066}, 'section': 'Section::::Abstract.'}]}]