Snow can be on tracks.Logical formLearned from9 sentences. Snow may fall in a city.Logical formLearned from9 sentences. A (weather bureau) may forecast snow.Logical formLearned from8 sentences. Snow may delay flights.Logical formLearned from8 sentences. Snow may kill some persons.Logical formLearned from8 sentences. A (snow disaster) can be in decades.Logical formLearned from8 sentences. Snow may affect tens of millions of persons.Logical formLearned from8 sentences. Some mm can be constituted-of-or-filled-with snow.Logical formLearned from8 sentences. Truckloads can be constituted-of-or-filled-with snow.Logical formLearned from8 sentences. A roof may collapse under snow.Logical formLearned from8 sentences. Snow may bring_down trees.Logical formLearned from8 sentences. A (snow falls) can be heavy.Logical formLearned from8 sentences. Snow can be on a highway.Logical formLearned from8 sentences. A male may sit_down in snow.Logical formLearned from8 sentences. Snow can be prominent.Logical formLearned from8 sentences.