A military can be on a trail.Logical formLearned from10 sentences. Trails can be constituted-of-or-filled-with dust.Logical formLearned from10 sentences. Trails may be established.Logical formLearned from10 sentences. A (nature trail) can be interpretive.Logical formLearned from10 sentences. A trail may pertain-to a life.Logical formLearned from10 sentences. A (snowmobile trail) can be groomed.Logical formLearned from10 sentences. A trail may stay.Logical formLearned from10 sentences. An (audit trail output) may be created during start-up.Logical formLearned from10 sentences. A trail may manifest steepness.Logical formLearned from10 sentences. Persons may go_up a trail.Logical formLearned from10 sentences. A trail can be well-marked.Logical formLearned from10 sentences. Trails can be high.Logical formLearned from10 sentences. A trail can be obvious.Logical formLearned from10 sentences. Trails can be guided.Logical formLearned from10 sentences. A (vapor trail) can be constituted-of-or-filled-with smoke.Logical formLearned from10 sentences.