Fog may form in valleys.Logical formLearned from8 sentences. A fog can be punch-drunk.Logical formLearned from8 sentences. A search may be hampered by fog.Logical formLearned from8 sentences. Fog may be reported around an airport.Logical formLearned from8 sentences. Fog can be likely.Logical formLearned from8 sentences. A shooting may come during a fog.Logical formLearned from8 sentences. Fogs can be in an area.Logical formLearned from8 sentences. A band can be constituted-of-or-filled-with fog.Logical formLearned from8 sentences. A (winter fog) can be thick.Logical formLearned from8 sentences. Fog may grounde an (one helicopter).Logical formLearned from8 sentences. A helicopter may crash in fog.Logical formLearned from8 sentences. A mountain can be in fog.Logical formLearned from8 sentences. Fog can be for some days.Logical formLearned from7 sentences. A fog can be malevolent.Logical formLearned from7 sentences. A fog can be dangerous.Logical formLearned from7 sentences.