Does the sentence "Hydrogen plays a vital role in powering stars through the proton-proton reaction and the CNO cycle nuclear fusion." provide a valid answer to the question "What percent of normal matter is hydrogen?"

A: no

Does the sentence "Hunting is primarily regulated by state law; additional regulations are imposed through United States environmental law in the case of migratory birds and endangered species." provide a valid answer to the question "What varies widely from state to state?"

A: no

Does the sentence "The team led by Peter Underhill, which discovered M458, did not consider the possibility that this was a Slavic marker, since they used the "evolutionary effective" mutation rate, which gave a date far too old to be Slavic." provide a valid answer to the question "Who searched for specifically Slavic sub-group of R1a1a [M17]?"

A: no

Does the sentence "It is one of the major agricultural production bases of China." provide a valid answer to the question "What are the major agricultural outputs of Sichuan?"

A:
no