With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: In 1960, Kemp led the Chargers to a Western Division Championship with a 10–4 record. He finished second in the league to Frank Tripucka in passing attempts, completions, and yards (making him and Tripucka the league's first 3,000-yard passers), led the AFL in yards per completion and times sacked, and finished one rushing touchdown short of the league lead. Under Kemp, the Chargers' offense averaged 46 ;points over its last four games and scored more than 41 ;points in five of its last nine games. In the AFL championship game, he led the team to field goals on its first two possessions, but the Houston Oilers posted a touchdown in the second quarter for a 7–6 lead; the Chargers eventually recovered.
text_B: Do the Chargers have an AFL Championship trophy in their trophy case?
YES.