question: What is the answer: How many Madison Square Gardens have there been before the existing one?
answer: three

question: What is the answer: What structural modification of oxygen is an air pollutant in the lower atmosphere but beneficial in the upper atmosphere?
answer: ozone

question: What is the answer: James Brindley is chiefly remembered for building what?
answer: canals

question: What is the answer: "Give the word that completes the fourth line of this poem: "" Tyger Tyger, burning bright, In the forests of the night; What immortal hand or eye. Could frame thy fearful ..........""?"
answer:
symmetry