Does the sentence "They found Stilwell lying in wait for Virgil in the Tucson station and killed him on the tracks." provide a valid answer to the question "What is the name of the sheriff who shot William Whitney Brazelton?"

A: no

Does the sentence "In November 2006, before the companies' merger, Alcatel sued Microsoft for allegedly infringing seven patents." provide a valid answer to the question "What subsequently happened after Alcatel was awarded damages?"

A: no

Does the sentence "(2006):" provide a valid answer to the question "In what year did Mahamoud publish his research?"

A: yes

Does the sentence "Henry II wanted to secure the southern borders of Aquitaine and decided to betroth his youngest son to Alais, the daughter and heiress of Humbert III of Savoy." provide a valid answer to the question "Henry II wanted to secure the southern borders of what?"

A:
yes