If the person wishes they were at the lake, they must not be at the lake about to do a jump into it. You don't go to the lake when it's thunderstorming


Context: "A person in swimming trunks who has used a rope swing to jump into a lake." Claim: "A person in swimming trunks wishes he was at the lake, but its thunderstorming"
Considering the context, is the claim true, false, or unknown?