Hills can be isolated.Logical formLearned from19 sentences. Hills may surround a village.Logical formLearned from19 sentences. A gap can be in hills.Logical formLearned from19 sentences. Hills can be in the north.Logical formLearned from19 sentences. A person can be a hill.Logical formLearned from19 sentences. Hills can be hard.Logical formLearned from19 sentences. A person may roll_down a hill.Logical formLearned from19 sentences. Access can be to hills.Logical formLearned from19 sentences. A range may pertain-to hills.Logical formLearned from19 sentences. Hills can be beautiful.Logical formLearned from19 sentences. Hills can be short.Logical formLearned from19 sentences. A (tree hill bridge) can be over (water bridge).Logical formLearned from19 sentences. A person may watch a (tree hill).Logical formLearned from19 sentences. Persons may get to a hill.Logical formLearned from19 sentences. Ridges may pertain-to hills.Logical formLearned from19 sentences.