Trails can be in a forest.Logical formLearned from6 sentences. A trail may continue into a us-state.Logical formLearned from6 sentences. A trail can be constituted-of-or-filled-with particles.Logical formLearned from6 sentences. (Walking trails) may pertain-to a US-president.Logical formLearned from6 sentences. A trail can be long.Logical formLearned from6 sentences. Trails may pertain-to an island.Logical formLearned from6 sentences. (Walking trails) can be popular.Logical formLearned from6 sentences. A trail may circle a lake.Logical formLearned from6 sentences. Presidential candidates can be on a (campaign trail).Logical formLearned from6 sentences. A trail may enter a park.Logical formLearned from6 sentences. Trails can be graded.Logical formLearned from6 sentences. Trails can be long-distance.Logical formLearned from6 sentences. A trail may wound.Logical formLearned from6 sentences. A (hiking trail) may pertain-to a country.Logical formLearned from6 sentences. A trail may pertain-to a group.Logical formLearned from6 sentences.