user: Question: What competition was the World Championships before 2011?
Columns: ['Year', 'Competition', 'Venue', 'Position', 'Event']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2005.0, 'European U23 Championships', 'Erfurt, Germany', '9th', '3000 m st.']
SQL:

assistant: SELECT "Event" FROM "Table" WHERE "Competition" = 'World Championships' AND "Year" < 2011.0;