Q: Does "Solar heating, cooling and ventilation technologies can be used to offset a portion of this energy." provide a valid answer to "How much energy does an HVAC system use in commercial locations?"?
OPTIONS:
- yes
- no
A: no

Q: Does "In the 1990s, notable players sold for anywhere from US$200 to well over $1,000, while older and less desirable players could be purchased in working condition for as little as $25." provide a valid answer to "How cheaply could an older LaserDisc player be purchased in the 1990s?"?
OPTIONS:
- yes
- no
A: yes

Q: Does "Hard-fought battles on the Japanese home islands of Iwo Jima, Okinawa, and others resulted in horrific casualties on both sides but finally produced a Japanese defeat." provide a valid answer to "How many Japanese troops defended Okinawa?"?
OPTIONS:
- yes
- no
A: no

Q: Does "Most domestic ducks are too heavy to fly, and they are social birds, preferring to live and move around together in groups." provide a valid answer to "How can you identify a duck from other poultry?"?
OPTIONS:
- yes
- no
A:
no