A whereabouts can be unknown.Logical formLearned from2 978 sentences. Reasons can be unknown.Logical formLearned from2 173 sentences. A cause can be unknown.Logical formLearned from1 235 sentences. A fate can be unknown.Logical formLearned from1 207 sentences. A male can be unknown.Logical formLearned from907 sentences. A reason can be unknown.Logical formLearned from828 sentences. A tomb may pertain-to an unknown soldier.Logical formLearned from703 sentences. Parts can be unknown.Logical formLearned from639 sentences. A whereabouts may remain unknown.Logical formLearned from570 sentences. A mechanism can be unknown.Logical formLearned from533 sentences. A location can be unknown.Logical formLearned from523 sentences. A motive can be unknown.Logical formLearned from500 sentences. A person can be unknown.Logical formLearned from468 sentences. A relationship of a taxon to taxas can be unknown.Logical formLearned from440 sentences. A condition can be unknown.Logical formLearned from436 sentences.