A sea can be against a backdrop of rugged mountains.Logical formLearned from12 sentences. Trucks can be rugged.Logical formLearned from12 sentences. Hikes can be rugged.Logical formLearned from12 sentences. Woodlands can be rugged.Logical formLearned from12 sentences. A (tribal region) can be rugged.Logical formLearned from12 sentences. Rugged mountains may pertain-to the south.Logical formLearned from12 sentences. A region can be constituted-of-or-filled-with rugged mountains.Logical formLearned from12 sentences. A .. can be rugged.Logical formLearned from11 sentences. Outcrops can be rugged.Logical formLearned from11 sentences. Cases can be rugged.Logical formLearned from11 sentences. Designs can be rugged.Logical formLearned from11 sentences. Travel can be rugged.Logical formLearned from11 sentences. A race can be rugged.Logical formLearned from11 sentences. Plastic can be rugged.Logical formLearned from11 sentences. Skirts can be rugged.Logical formLearned from11 sentences.