Fog may be reported in an area.Logical formLearned from12 sentences. A plane may be hold_uped by fog.Logical formLearned from12 sentences. Fog may be reported.Logical formLearned from12 sentences. Areas can be constituted-of-or-filled-with (valley fog).Logical formLearned from12 sentences. A (valley fog) can be patchy.Logical formLearned from12 sentences. A river may blanket with fog.Logical formLearned from12 sentences. A fog may settle over a republic.Logical formLearned from12 sentences. A jet may crash in fog.Logical formLearned from12 sentences. A fog can be worse.Logical formLearned from12 sentences. An accident may happen in fog.Logical formLearned from12 sentences. Fog may delay flights.Logical formLearned from11 sentences. Fog may delay some flights.Logical formLearned from11 sentences. A bumper can be with (fog lights).Logical formLearned from11 sentences. A fog may be cleared.Logical formLearned from11 sentences. Fog may close an airport.Logical formLearned from11 sentences.