Problem:Context: Elvis Aaron Presley (January 8, 1935 -- August 16, 1977) was an American singer and actor. Regarded as one of the most significant cultural icons of the 20th century, he is often referred to as the "King of Rock and Roll" or simply "the King".

Question: who is known as the king of rock?
Solution:OK... The relevant information to answer the above question is: Regarded as one of the most significant cultural icons of the 20th century, he is often referred to as the "King of Rock and Roll" or simply "the King".
Elvis Aaron Presley.

Problem:"La-La (Means I Love You)" is an R&B / soul song by American vocal group The Delfonics. Released on January 26, 1968 by Philly Groove Records, the song was written by Thom Bell and William Hart, and produced by Bell and Stan Watson.

Answer this question: who wrote la la means i love you?
Solution:OK... The relevant information is: Released on January 26, 1968 by Philly Groove Records, the song was written by Thom Bell and William Hart, and produced by Bell and Stan Watson.
Thom Bell and William Hart.

Problem:The 2017 US Open was the 137th edition of tennis' US Open and the fourth and final Grand Slam event of the year. It was held on outdoor hard courts at the USTA Billie Jean King National Tennis Center in New York City. Experimental rules featured in qualifying for the main draw as well as in the junior, wheelchair and exhibition events.

Based on this passage, where is the us tennis open being held this year?
Solution:
OK... The relevant sentence in the passage is: It was held on outdoor hard courts at the USTA Billie Jean King National Tennis Center in New York City.
the USTA Billie Jean King National Tennis Center in New York City.