Question: what is the name of the recently discovered central asian urban society from ca. 2200 b.c.e
[{'answer': 'Indus Valley Civilisation', 'provenance': [{'wikipedia_id': '46853', 'title': 'Indus Valley Civilisation', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]