premise: So the result was 700 m swimming ; 350 m breaststroke and 350 m front crawl legs - all done in 23 minutes ! I am so proud of myself ! I might also soon chance it and do a few lengths of crawl with arms - I do n't know why that frightens me so , but it does . Where did I swim for 23 minutes ?
hypothesis: I swam in a school pool .