Does the sentence "In mammals, preparation for digestion begins with the cephalic phase in which saliva is produced in the mouth and digestive enzymes are produced in the stomach." provide a valid answer to the question "What is the firs phase in preparation for digestion in mammals?"

A: yes

Does the sentence "Great Jones Street connects East 3rd to West 3rd." provide a valid answer to the question "Which village do 3rd and 4th Street extend into?"

A: no

Does the sentence "Racism has led to many instances of tragedy, including slavery and genocide." provide a valid answer to the question "What has led to many tragic instances of events like slavery and genocide?"

A: yes

Does the sentence "It has been speculated that the crisis over the Carolines with Spain, which almost provoked a war, was in fact "a feint to cover the acquisition of the Marshall Islands", which went almost unnoticed at the time, despite the islands being the largest source of copra in Micronesia." provide a valid answer to the question "What status did the Marshall Islands have in Germany?"

A:
no