[['[TABLECONTEXT]', '[TITLE]', 'River Trent'], ['[TABLECONTEXT]', 'RANK', '3'], ['3', 'DATE', 'March 1947'], ['3', 'LEVEL_AT_TRENT_BRIDGE_M', '24.30']]
At rank _____, River Trent in March 1947 had a level of _____ m at the Trent Bridge.