QUES: Q: What sets a contagious disease after from a standard infectious disease?
A: Thus, a contagious disease is a subset of infectious disease that is especially infective or easily transmitted.
Does the answer answer the question?

ANS: yes

QUES: Q: LEDs are often used for what type of systems?
A: Barcode scanners are the most common example of machine vision, and many low cost products use red LEDs instead of lasers.
Does the answer answer the question?

ANS: no

QUES: Q: What will the 2 Queen Elizabeth class ships be named?
A: The ships will be named HMS Queen Elizabeth and HMS Prince of Wales.
Does the answer answer the question?

ANS: yes

QUES: Q: When did the UN ask Tuvalu to come up with a plan to improve drinking water?
A: In July 2012 a United Nations Special Rapporteur called on the Tuvalu Government to develop a national water strategy to improve access to safe drinking water and sanitation.
Does the answer answer the question?

ANS:
yes