Question: In which district of the Badakhshan Province is the settlement located which is famous for its ancient mines, which produce a deep blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color, and are said to produce the world's finest of this stone?
{'answer': 'the Kuran Wa Munjan District', 'supporting_facts': [['Lapis lazuli', 0], ['Sar-i Sang', 0]]}