Question: what is the population of keystone heights florida
[{'answer': '1,350', 'provenance': [{'wikipedia_id': '108984', 'title': 'Keystone Heights, Florida', 'start_paragraph_id': 1, 'start_character': 119, 'end_paragraph_id': 1, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1,461'}, {'provenance': [{'wikipedia_id': '108984', 'title': 'Keystone Heights, Florida', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 143, 'bleu_score': 0.9181891462193901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15841156883877807696}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '108984', 'title': 'Keystone Heights, Florida', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The population of the city was 1,350 at the 2010 census.', '1,350', 'Keystone Heights is a city located in southwestern Clay County, Florida, United States. The population of the city was 1,350 at the 2010 census.']}}]}, {'provenance': [{'wikipedia_id': '108984', 'title': 'Keystone Heights, Florida', 'section': 'Section::::History.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ['The population of the city was 1,350 at the 2010 census', '1,350', 'Keystone Heights is a city located in southwestern Clay County, Florida, United States. The population of the city was 1,350 at the 2010 census. In 1918, the area that would eventually become known as the city of Keystone Heights was a small community known as Brooklyn located along present day State Road 100, about one mile north of the present location of Keystone Heights on Lake Brooklyn. In those early days Brooklyn consisted of a large unpainted building called the Brooklyn Hotel; a combination general store and post office; and several']}}]}]