Does the sentence "DNA samples from 1228 Russians show that the Y chromosomes analyzed, all except 20 (1.6%) fall into seven major haplogroups all characteristic to West Eurasian populations." provide a valid answer to the question "DNA samples from 1228 Russians show that the Y chromosomes analyzed, all except 20 (1.6%) fall into seven major haplogroups all characteristic to what populations?"

A: yes

Does the sentence "Congress also has the duty and authority to prescribe the laws and regulations under which the armed forces operate, such as the Uniform Code of Military Justice, and requires that all Generals and Admirals appointed by the president be confirmed by a majority vote of the Senate before they can assume their office." provide a valid answer to the question "Who is the commander and chief of the Army?"

A: no

Does the sentence "The scale of humanitarian aid to the poor and unstable regions of the world grows, but it is highly vulnerable to corruption, with food aid, construction and other highly valued assistance as the most at risk." provide a valid answer to the question "Along with food aid, what is most at risk in these countries?"

A: yes

Does the sentence "Terrified that her father Tony could be taken from her as well, Madonna was often unable to sleep unless she was near him." provide a valid answer to the question "Who did Madonna turn to for comfort during her mother's illness?"

A:
no