A terrain can be rugged.Logical formLearned from4 384 sentences. A terrain can be mountainous.Logical formLearned from4 248 sentences. A terrain can be difficult.Logical formLearned from2 488 sentences. A terrain can be hilly.Logical formLearned from1 758 sentences. A terrain can be steep.Logical formLearned from1 247 sentences. A terrain can be flat.Logical formLearned from1 213 sentences. A terrain can be rocky.Logical formLearned from1 071 sentences. A terrain may pertain-to a country.Logical formLearned from594 sentences. A terrain can be uneven.Logical formLearned from562 sentences. A terrain can be complex.Logical formLearned from491 sentences. A terrain can be harsh.Logical formLearned from473 sentences. A terrain can be open.Logical formLearned from461 sentences. A terrain can be treacherous.Logical formLearned from402 sentences. A terrain can be varied.Logical formLearned from389 sentences. A terrain can be inhospitable.Logical formLearned from330 sentences.