Does the sentence "Some stakeholders still have the perspective that solar PV remains too costly on an unsubsidized basis to compete with conventional generation options." provide a valid answer to the question "What cost is often regarded as marking the achievment of grid parity for PV?"

A: no

Does the sentence "Tuberculosis is the second-most common cause of death from infectious disease (after those due to HIV/AIDS)." provide a valid answer to the question "When did new cases of TB infection start going down?"

A: no

Does the sentence "Advertisements produced by political campaigns usually included the statement, "I'm [candidate's name], and I approve this message." provide a valid answer to the question "How were viewers able to determine who endorsed political campaign ads, they saw in advertisements??"

A: no

Does the sentence "In fall of 1990, Beyonce enrolled in Parker Elementary School, a music magnet school in Houston, where she would perform with the school's choir." provide a valid answer to the question "What town did Beyonce go to school in?"

A:
no