Question: what are the four main types of precipitation
[{'answer': 'drizzle', 'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'start_paragraph_id': 1, 'start_character': 159, 'end_paragraph_id': 1, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'rain', 'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'sleet', 'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'start_paragraph_id': 1, 'start_character': 174, 'end_paragraph_id': 1, 'end_character': 179, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'snow', 'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'start_paragraph_id': 1, 'start_character': 181, 'end_paragraph_id': 1, 'end_character': 185, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'graupel', 'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'start_paragraph_id': 1, 'start_character': 187, 'end_paragraph_id': 1, 'end_character': 194, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'hail', 'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'start_paragraph_id': 1, 'start_character': 199, 'end_paragraph_id': 1, 'end_character': 203, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 789, 'bleu_score': 0.9622032542074631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8281332950796392238}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', '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': 8281332950796392238}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10906237', 'title': 'Precipitation types', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['Frozen forms of precipitation include snow, ice crystals, ice pellets (sleet), hail, and graupel.', 'Frozen forms of precipitation include snow, ice crystals, ice pellets (sleet), hail, and graupel.', 'd forms of precipitation include rain and drizzle. Rain or drizzle which freezes on contact within a subfreezing air mass gains the preceding adjective "freezing", becoming known as freezing rain or freezing drizzle. Frozen forms of precipitation include snow, ice crystals, ice pellets (sleet), hail, and graupel. Their respective intensities are classified either by rate of fall, or by visibility restriction. Precipitation falls in m']}}]}, {'provenance': [{'wikipedia_id': '286260', 'title': 'Precipitation', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The main forms of precipitation include drizzle, rain, sleet, snow, graupel and hail', 'The main forms of precipitation include drizzle, rain, sleet, snow, graupel and hail.']}}]}]