Question: What season did the Rams finished the regular-season with a record of 13–3, and the NFC West Championship and had a offensive coordinator behind the St. Louis Rams high-powered offence of that season?
Sentence (from "1999 St. Louis Rams season"): The 1999 St. Louis Rams season was the team's 62nd year with the National Football League and the fifth season in St. Louis, Missouri.
Relevant evidence: Yes