Fog may thicken.Logical formLearned from5 sentences. Fog may shut_down efforts.Logical formLearned from5 sentences. Heavy rain of an aftermath may show fog.Logical formLearned from5 sentences. Fog may push_off a start.Logical formLearned from5 sentences. Trees may be concealed in fog.Logical formLearned from5 sentences. A (morning fog) may be burn_offed.Logical formLearned from5 sentences. Dozens of police may stand in a fog.Logical formLearned from5 sentences. A male may say in a fog of smoke.Logical formLearned from5 sentences. The weather can be a fog.Logical formLearned from5 sentences. Fog may force a cancellation of an international-political-entity.Logical formLearned from5 sentences. Some fog may form.Logical formLearned from5 sentences. Fogs may hamper an airlift of medical supplies.Logical formLearned from5 sentences. A (morning fog) may prevent a driver from seeing a train.Logical formLearned from5 sentences. A private plane may crash in fog.Logical formLearned from5 sentences. Fog may hamper use of (air power).Logical formLearned from5 sentences.