Q: Does "Each of the nine or ten Zn2+ ions in a zinc finger helps maintain the finger's structure by coordinately binding to four amino acids in the transcription factor." provide a valid answer to "What role does zinc play in fingers, twists and clusters?"?
OPTIONS:
- yes
- no
A: no

Q: Does "A lack of cold air flow, combined with slow-moving air masses carrying industrial emissions, collected airborne pollutants to form a thick layer of smog over the region." provide a valid answer to "When did a thick wave of smog first appear in Central and Eastern China?"?
OPTIONS:
- yes
- no
A: no

Q: Does "The deep, enormous Panthalassa (the "universal ocean") covered the rest of the planet." provide a valid answer to "What was the largest ocean referred to that existed in the Devonian period?"?
OPTIONS:
- yes
- no
A: yes

Q: Does "The Russians now decided to advance, the Turks took up a strong position on the Kars road and attacked." provide a valid answer to "After giving up their position at Poti and Redut Kale, where did the Russians retreat to?"?
OPTIONS:
- yes
- no
A:
no