Does the sentence "Silver half dollars were last issued for circulation in 1970." provide a valid answer to the question "Which year brought the end to silver being in dimes and quarters?"

A: no

Does the sentence "Though Process and Reality has been called "arguably the most impressive single metaphysical text of the twentieth century," it has been little-read and little-understood, partly because it demands as Isabelle Stengers puts it "that its readers accept the adventure of the questions that will separate them from every consensus."" provide a valid answer to the question "Who thought Process and Reality was little-read because the reader has to separate them from normal thought?"

A: yes

Does the sentence "Because more Americans have insisted on being allowed to acknowledge their mixed racial origins, the 2000 census for the first time allowed residents to check more than one ethno-racial identity and thereby identify as multiracial." provide a valid answer to the question "When did the US begin to experience a growing multiracial identity movement?"

A: no

Does the sentence "Harvey Fletcher, also an alumnus of BYU, inventor of stereophonic sound, went on to carry out the now famous oil-drop experiment with Robert Millikan, and was later Founding Dean of the BYU College of Engineering." provide a valid answer to the question "Which BYU student produced algorithm is found in Adobe Photoshop?"

A:
no