Yachtsmen should bear in mind a Deauville if you can see the port of Le Havre, it will rain in the afternoon, and if you can't, it's already raining.
Le Havre never sees rain, in the afternoon or otherwise.
mnli hypothesis: Le Havre never sees rain, in the afternoon or otherwise. premise: Yachtsmen should bear in mind a Deauville if you can see the port of Le Havre, it will rain in the afternoon, and if you can't, it's already raining.