Question: Patty Hill is perhaps best known for co-writing, with her sister Mildred Hill a song that was translated into how many languages ?
Sentence (from "Patty Hill"): Patty Smith Hill (March 27, 1868 – May 25, 1946) was a composer and teacher who is perhaps best known for co-writing, with her sister Mildred Hill, the tune which later became popular as "Happy Birthday to You".
Relevant evidence: Yes