Question: where is the serengeti plain located in africa
[{'answer': 'northern Tanzania', 'provenance': [{'wikipedia_id': '28861', 'title': 'Serengeti', 'start_paragraph_id': 1, 'start_character': 80, 'end_paragraph_id': 1, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'south - western Kenya'}]