A us-state can be a disaster.Logical formLearned from23 sentences. A disaster can be natural.Logical formLearned from23 sentences. A disaster may be grounded.Logical formLearned from23 sentences. Persons may have natural disasters.Logical formLearned from23 sentences. Natural disasters can be common.Logical formLearned from23 sentences. An (airline disaster) may pertain-to a country.Logical formLearned from23 sentences. A board may investigate a disaster.Logical formLearned from23 sentences. Some persons can be in a disaster.Logical formLearned from23 sentences. A (soccer disaster) can be in a continent.Logical formLearned from23 sentences. Cases can be constituted-of-or-filled-with disaster.Logical formLearned from23 sentences. A disaster can be (maritime spill).Logical formLearned from23 sentences. An (aviation disaster) may pertain-to a nation.Logical formLearned from23 sentences. An (aviation disaster) can be in some years.Logical formLearned from23 sentences. A natural disaster can be a quake.Logical formLearned from23 sentences. A humanitarian disaster can be in a region.Logical formLearned from23 sentences.