Sentence 1: Thaw participated in two of the cross-country Bendix trophy races , which were held in 1931 and instituted annually to promote and encourage the achievements of U.S. aviation .
Sentence 2: Thaw participated in two of the cross-country - Bendix - trophy races , which were introduced in 1931 and held annually to promote the achievements of U.S. aviation .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?