Leaves can be sturdy.Logical formLearned from17 sentences. Walls can be sturdy.Logical formLearned from17 sentences. Slats can be sturdy.Logical formLearned from17 sentences. A child can be sturdy.Logical formLearned from17 sentences. A stroller can be sturdy.Logical formLearned from17 sentences. A bed can be sturdy.Logical formLearned from17 sentences. A (mountain bike) can be sturdy.Logical formLearned from17 sentences. Jeans can be sturdy.Logical formLearned from17 sentences. A clip can be sturdy.Logical formLearned from17 sentences. A way can be sturdy.Logical formLearned from17 sentences. A floor can be sturdy.Logical formLearned from17 sentences. A roof can be sturdy.Logical formLearned from17 sentences. A constitution can be sturdy.Logical formLearned from17 sentences. A camera can be sturdy.Logical formLearned from17 sentences. An appearance can be sturdy.Logical formLearned from16 sentences.