Based on the clue '3 of the 4 people to have assassinated a us presid...', what is the answer?

Based on the clue '3 of the 1st 10 presidents had this 1st name not j...', what is the answer? What is associated with: 3 of the 4 actors who sought deliverance in that 1972 film? Based on the clue '3 of the 4 full sentences in the first verse end i...', what is the answer? Based on the clue '3 of the 4 islands that make up the greater antill...', what is the answer? Based on the clue '3 of the 4 quarters that make up the old city', what is the answer? Based on the clue '3 of the 4 star wars movie characters with darth i...', what is the answer? Based on the clue '3 of the 4 states whose names come from the first ...', what is the answer? Based on the clue '3 of the 4 vital signs to be monitored according t...', what is the answer?