Question: when does jeremy turn into a vampire hunter
[{'answer': 'In season four', 'provenance': [{'wikipedia_id': '26999285', 'title': 'List of The Vampire Diaries characters', 'start_paragraph_id': 34, 'start_character': 0, 'end_paragraph_id': 34, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Main characters.:Jeremy Gilbert.\n'}]}, {'provenance': [{'wikipedia_id': '26999285', 'title': 'List of The Vampire Diaries characters', 'start_paragraph_id': 34, 'start_character': 0, 'end_paragraph_id': 34, 'end_character': 1048, 'bleu_score': 0.9893895451459531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6176906891378433908}, 'section': 'Section::::Main characters.:Jeremy Gilbert.\n'}]}]