Does "Infrared reflectography (fr; it; es), as called by art conservators, can be applied to paintings to reveal underlying layers in a completely non-destructive manner, in particular the underdrawing or outline drawn by the artist as a guide." contain the correct answer to "What technique is used in art to examine underlying layers of a painting without damaging it?"

A: yes


Does "It is considered to represent the "classical" form of Old English." contain the correct answer to "What event led to English temporarily losing its importance as a literary language?"

A: no


Does "A stand-out case is the President of Iran, who is not actually a head of state, but the head of the government of Iran." contain the correct answer to "What is the head of Iran's government called?"

A:
yes