Question: how many breeds of pigs are there in the uk
[{'answer': '-- -', 'provenance': [{'wikipedia_id': '17000072', 'title': 'List of pig breeds', 'start_paragraph_id': 0, 'start_character': 4, 'end_paragraph_id': 0, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17000072', 'title': 'List of pig breeds', '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': 16936561476595313307}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20264398', 'title': 'Agriculture in the United Kingdom', 'section': 'Section::::Pastoral farming.:Other livestock and poultry.\n', 'start_paragraph_id': 101, 'end_paragraph_id': 101, 'meta': {'evidence_span': ['rom fewer than 400 flocks, mostly with more than 50,000 birds each. Other livestock and poultry farmed on a smaller scale include game birds, duc', "The UK has about 73,000 goats, mostly as milk producers; this number is relatively small by EU standards. Venison production in the UK is mainly from red deer, with a few fallow deer as well, but there are only about 300 venison-producing farms. As noted above, there are about 26,500 farms with chickens. However, more than half the UK's eggs come from fewer than 400 flocks, mostly with more than 50,000 birds each. Other livestock and poultry farmed on a smaller scale include game birds, ducks, geese, turkeys, ostriches and rabbits. In this way, the UK produce annually 22 millions turkeys."]}}]}, {'provenance': [{'wikipedia_id': '158158', 'title': 'Intensive pig farming', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Intensive pig farming, also known as pig factory farming is a subset of pig farming and of Industrial animal agriculture, all of which are types of animal husbandry, in which livestock domestic pigs are raised up to slaughter weight. These operations are known as AFO or CAFO in the U.S. In this system of pig production, grower pigs are housed indoors in group-housing or straw-lined sheds, whilst pregnant sows are housed in gestation crates or pens and give birth in farrowing crates.', 'Intensive pig farming, also known as pig factory farming is a subset of pig farming and of Industrial animal agriculture, all of which are types of animal husbandry, in which livestock domestic pigs are raised up to slaughter weight. These operations are known as AFO or CAFO in the U.S. In this system of pig production, grower pigs are housed indoors in group-housing or straw-lined sheds, whilst pregnant sows are housed in gestation crates or pens and give birth in farrowing crates.']}}]}]