Q: Does "This trade, illegal since it was outlawed by the Qing dynasty in 1729, helped reverse the trade imbalances resulting from the British imports of tea, which saw large outflows of silver from Britain to China." provide a valid answer to "Which dynasty outlawed opium trade?"?
OPTIONS:
- yes
- no
A: yes

Q: Does "In 1855, Washington Territorial Governor Isaac Stevens negotiated the Hellgate treaty between the United States Government and the Salish, Pend d'Oreille, and the Kootenai people of western Montana, which established boundaries for the tribal nations." provide a valid answer to "What did the treaty establish?"?
OPTIONS:
- yes
- no
A: no

Q: Does "By the late 10th century Italy had been drawn into the Ottonian sphere after a period of instability; Otto III (r. 9961002) spent much of his later reign in the kingdom." provide a valid answer to "In what year did Otto I become Holy Roman Emperor?"?
OPTIONS:
- yes
- no
A: no

Q: Does "In some areas the modern practice of building ski runs by mechanical means has destroyed the underlying tundra from which the plant life cannot recover during the non-skiing months, whereas areas that still practice a natural piste type of ski slope building preserve the fragile underlayers." provide a valid answer to "The practice of building ski runs by mechanical means has destroyed what?"?
OPTIONS:
- yes
- no
A:
yes