Question: how did long john silver lose his leg in treasure island
[{'answer': 'in the Royal Navy', 'provenance': [{'wikipedia_id': '184689', 'title': 'Long John Silver', 'start_paragraph_id': 3, 'start_character': 29, 'end_paragraph_id': 3, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Profile.\n'}]}, {'answer': "under `` the immortal Hawke ''"}, {'provenance': [{'wikipedia_id': '184689', 'title': 'Long John Silver', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16838593123060944464}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '184689', 'title': 'Long John Silver', 'section': 'Section::::Profile.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['in the Royal Navy', 'Silver claims to have served in the Royal Navy and lost his leg under "the immortal Hawke".', 'Silver claims to have served in the Royal Navy and lost his leg under "the immortal Hawke"']}}]}]