Does the sentence "Most birds can fly, which distinguishes them from almost all other vertebrate classes." provide a valid answer to the question "Approximately how many extant bird species are flightless?" OPTIONS:
- yes
- no

A: no

Does the sentence "Historian Margaret Jacob stresses the importance of the Masons in indirectly inspiring enlightened political thought." provide a valid answer to the question "Historian Margaret Jacob stresses the importance of the Masons in indirectly inspriting what type of thinking?" OPTIONS:
- yes
- no

A: yes

Does the sentence "From 2002 to 2006, the crime rate overall dropped 0.8%, though not evenly by category." provide a valid answer to the question "What percentage did the crime rate in San Diego drop from 2002 to 2006?" OPTIONS:
- yes
- no

A: yes

Does the sentence "The airport is connected by a 29-kilometre (18 mi) highway directly to the city center, and is also linked to various intercity highways, making it accessible to the passengers from the surrounding cities." provide a valid answer to the question "How many routes does Nanjing's airport run?" OPTIONS:
- yes
- no

A:
no