Generate a question about the topic "Race (human classification)" whose answer would be: First used to denote national affiliations, the term began to be used to relate to physical traits in the 17th century..
Ans: when did classification of races begin?

Generate a question about the topic "Henry Sampson (inventor)" whose answer would be: Henry T. Thomas Sampson, Jr. (born in Jackson, Mississippi in 1934) is an African-American inventor..
Ans: WHO IS HENRY SAMPSON JR.?

Generate a question about the topic "Cocaine (song)" whose answer would be: "Cocaine" is a song written and recorded by JJ Cale in 1976, but also known as a cover version recorded by Eric Clapton ..
Ans: who wrote the song cocaine?

Generate a question about the topic "OLED" whose answer would be: This layer of organic semiconductor is situated between two electrodes..
Ans: what is the organic layer in an amoled screen?