Question: Which football team won a La Liga trophy in the season that started on 29 August 1998 and finished on 20 June 1999?
Sentence (from "2004–05 FC Barcelona season"): The 2004-05 season saw Fútbol Club Barcelona end their six-year wait for the La Liga title, having not won the league or, indeed, any trophy since the 1998–99 season and thus La Liga trophy returned in Barcelona's trophy room.
Relevant evidence: Yes