Does the sentence "Lack of bright sources can make terahertz photography more challenging than most other infrared imaging techniques." provide a valid answer to the question "What devices are often equipped with infrared blockers?"

A: no

Does the sentence "Despite a never-ending attack of Prussian infantry, the soldiers of the 2nd Division kept to their positions." provide a valid answer to the question "How many dead troops leave behind?"

A: no

Does the sentence "He gained and has maintained renown worldwide as one of the leading musicians of his era, whose "poetic genius was based on a professional technique that was without equal in his generation." provide a valid answer to the question "For what instrument did Frederic write primarily for?"

A: no

Does the sentence "Peel, widely regarded as the father of modern policing, was heavily influenced by the social and legal philosophy of Jeremy Bentham, who called for a strong and centralized, but politically neutral, police force for the maintenance of social order, for the protection of people from crime and to act as a visible deterrent to urban crime and disorder." provide a valid answer to the question "How did Peel organize police?"

A:
no