A fog may disappear.Logical formLearned from42 sentences. Fog can be a problem.Logical formLearned from41 sentences. A fog can be green.Logical formLearned from41 sentences. A (turboprop plane) may crash in fog.Logical formLearned from41 sentences. A defeat of a proposal may lower a fog of uncertainty.Logical formLearned from40 sentences. Fogs can be thick.Logical formLearned from39 sentences. Fog can be thick.Logical formLearned from39 sentences. Fog may lift.Logical formLearned from39 sentences. A bit can be constituted-of-or-filled-with fog.Logical formLearned from38 sentences. A fog may pertain-to a month.Logical formLearned from38 sentences. (Fog lights) can be integrated.Logical formLearned from37 sentences. A fog can be constituted-of-or-filled-with smoke.Logical formLearned from37 sentences. A fog can be wet.Logical formLearned from36 sentences. A fog may thicken.Logical formLearned from36 sentences. Some trains may collide in fog.Logical formLearned from35 sentences.