Question: Billie Lou Watt, was an actress in theater and television, including several voice acting roles for commercials, anime and animated series, she's known for playing Elsie the Cow, a character, for which cartoon cow developed as a mascot for which organization, in 1936, to symbolize the "perfect dairy product"? 
Sentence (from "Billie Lou Watt"): Billie Lou Watt (June 20, 1924 – September 7, 2001) was an actress in theater and television, including several voice acting roles for commercials, anime and animated series.
Relevant evidence: No