With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: In July 1962, Oswald was hired by the Leslie Welding Company in Dallas; he liked the work, but was fired after three months. On October 12, he started working for the graphic-arts firm of Jaggars-Chiles-Stovall as a photoprint trainee. A fellow employee at Jaggars-Chiles-Stovall testified that Oswald's rudeness at his new job was such that fights threatened to break out, and that he once saw Oswald reading a Russian-language publication. Oswald was fired in the first week of April 1963.
text_B: Is there reason to believe that Oswald was not good at his job in the Leslie Welding Company?
YES.