Q: Does "Caged birds display a preferential flight direction that corresponds with the migratory direction they would take in nature, changing their preferential direction at roughly the same time their wild conspecifics change course." provide a valid answer to "How do birds act in the period before migration?"?
OPTIONS:
- yes
- no
A: no

Q: Does "One study indicates that throughout East Asia, only South Korea, Singapore, Japan, Taiwan and Hong Kong have societies that are robustly committed to a law-bound state." provide a valid answer to "What East Asian philosophy emphasized virtuous leadership?"?
OPTIONS:
- yes
- no
A: no

Q: Does "Portugal is a significant European minerals producer and is ranked among Europe's leading copper producers." provide a valid answer to "What mineral is Portugal ranked as a leading European producer of?"?
OPTIONS:
- yes
- no
A: yes

Q: Does "For radio waves, one important reflector is the ionosphere which can change the wave's polarization." provide a valid answer to "What mostly affects polarization?"?
OPTIONS:
- yes
- no
A:
no