Teacher:In this task, you are given a question and an answer. Answer "Yes" if the given answer correctly answers the question, otherwise answer "No".
Teacher: Now, understand the problem? Solve this instance: what did elijah mccoy invent, Answer: Elijah J. McCoy (May 2, 1844 October 10, 1929) was a black Canadian-American inventor and engineer, who was notable for his 57 U.S. patents , most to do with lubrication of steam engines.
Student:
Yes