Question: How many pop hits on the "Billboard" Hot 100 between 1955 and 1999 has this American composer and singer-songwriter of "It's Going to Take Some Time" written or co-written? 
Sentence (from "It's Going to Take Some Time"): "It's Going to Take Some Time" is a song written by Carole King and Toni Stern for King’s 1971 album, "Music".
Relevant evidence: Yes