Does the sentence "" They do however demonstrate a history of sign use in the Yellow River valley during the Neolithic through to the Shang period." provide a valid answer to the question "What color was the famous valley during the Neolithic through to the Shang period?"

A: yes

Does the sentence "Compuware completed its world headquarters in downtown in 2003." provide a valid answer to the question "What Tech company is based in Detroit?"

A: yes

Does the sentence "On April 16, a protest was organised in Delhi "against Chinese repression in Tibet", and was broken up by the police." provide a valid answer to the question "Where was Bedi retired from?"

A: no

Does the sentence "In 1977, Philips then established a laboratory with the mission of creating a digital audio disc." provide a valid answer to the question "Who was the director of the Philips audio division in 1974?"

A:
no