Q: Does "Some have survived to the present day; others have disappeared, only to be recreated in order to perform music of the period on authentic instruments." provide a valid answer to "What has disappeared, then been recreated in order to perform music of the period?"?
A: yes

Q: Does "Trans fats are very rare in nature, and have been shown to be highly detrimental to human health, but have properties useful in the food processing industry, such as rancidity resistance.[citation needed]" provide a valid answer to "Although trans fats are harmful to human health, what property do they have that makes them useful in food processing?"?
A: yes

Q: Does "Though designed to help teams adjust to the loss of television revenues (the average Premier League team receives 55 million while the average Football League Championship club receives 2 million), critics maintain that the payments actually widen the gap between teams that have reached the Premier League and those that have not, leading to the common occurrence of teams "bouncing back" soon after their relegation." provide a valid answer to "If a team is relegated in the Premier League what type of tv payment do they receive?"?
A: no

Q: Does "The first commercial system was the Solar Total Energy Project (STEP) in Shenandoah, Georgia, USA where a field of 114 parabolic dishes provided 50% of the process heating, air conditioning and electrical requirements for a clothing factory." provide a valid answer to "Are transpired collectors more or less cost-effective than glazed collection systems?"?
A:
no