Does the sentence "The Qin unified the Chinese Warring States by conquest, but their empire became unstable after the death of the first emperor Qin Shi Huangdi." provide a valid answer to the question "Who was the first emperor during the Qin dynasty?" OPTIONS:
- yes
- no

A: yes

Does the sentence "In addition, the Soviets provided Germany with access to the Northern Sea Route for both cargo ships and raiders (though only the commerce raider Komet used the route before the German invasion), which forced Britain to protect sea lanes in both the Atlantic and the Pacific." provide a valid answer to the question "What did the Germans use to avoid British blockades?" OPTIONS:
- yes
- no

A: no

Does the sentence "For example, plant phenology can be a useful proxy for temperature in historical climatology, and the biological impact of climate change and global warming." provide a valid answer to the question "How can historical changes in the environment be detected?" OPTIONS:
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- no

A: yes

Does the sentence "Final interpretation of and amendments to the German Constitution, the Grundgesetz, is the task of the Bundesverfassungsgericht (Federal Constitutional Court), which is the de facto highest German court, as it can declare both federal and state legislation ineffective, and has the power to overrule decisions of all other federal courts, despite not being a regular court of appeals on itself in the German court system." provide a valid answer to the question "What is Germany's constitution called?" OPTIONS:
- yes
- no

A:
yes