Question: when did they stop making tin type photos
[{'answer': 'early 20th century', 'provenance': [{'wikipedia_id': '1083657', 'title': 'Tintype', 'start_paragraph_id': 1, 'start_character': 331, 'end_paragraph_id': 1, 'end_character': 349, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1083657', 'title': 'Tintype', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 407, 'bleu_score': 0.9352671999472251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7135225029210759031}, 'section': 'Section::::Abstract.'}]}]