A (family adventure) can be sturdy.Logical formLearned from37 sentences. A ladder can be sturdy.Logical formLearned from37 sentences. Trees can be sturdy.Logical formLearned from37 sentences. An object can be sturdy.Logical formLearned from37 sentences. A home can be sturdy.Logical formLearned from36 sentences. A voice can be sturdy.Logical formLearned from36 sentences. A rope can be sturdy.Logical formLearned from35 sentences. A vehicle can be sturdy.Logical formLearned from35 sentences. A fence can be sturdy.Logical formLearned from35 sentences. A (steel construction) can be sturdy.Logical formLearned from35 sentences. A branch can be sturdy.Logical formLearned from34 sentences. Benches can be sturdy.Logical formLearned from34 sentences. A female can be sturdy.Logical formLearned from34 sentences. A bike can be sturdy.Logical formLearned from34 sentences. Houses can be sturdy.Logical formLearned from33 sentences.