A helicopter may crash in fog.Logical formLearned from15 sentences. A collision can be in fog.Logical formLearned from15 sentences. Fog may cause problems.Logical formLearned from14 sentences. Fog may be grounded.Logical formLearned from14 sentences. A (fog bank) can be thick.Logical formLearned from14 sentences. A fog can be pleasant.Logical formLearned from14 sentences. A fog can be purple.Logical formLearned from14 sentences. Yourselves can be (fog bell).Logical formLearned from14 sentences. A fog can be within preview.Logical formLearned from14 sentences. A coastal fog can be thick.Logical formLearned from14 sentences. Themselves may be sock_ined by fog.Logical formLearned from14 sentences. A fog can be extreme.Logical formLearned from14 sentences. A fog can be constituted-of-or-filled-with exhaustion.Logical formLearned from14 sentences. A fog can be ever-present.Logical formLearned from14 sentences. A fog can be continuous.Logical formLearned from14 sentences.