A (painting surface) can be sturdy.Logical formLearned from6 sentences. A countenance can be sturdy.Logical formLearned from6 sentences. A defense can be sturdy.Logical formLearned from6 sentences. Trees can be sturdy.Logical formLearned from6 sentences. Seats can be sturdy.Logical formLearned from6 sentences. (Plastic boxes) can be sturdy.Logical formLearned from6 sentences. A spine can be sturdy.Logical formLearned from6 sentences. Robots can be sturdy.Logical formLearned from6 sentences. Canes can be sturdy.Logical formLearned from6 sentences. Objects can be sturdy.Logical formLearned from6 sentences. An alternative can be sturdy.Logical formLearned from6 sentences. A little girl can be sturdy.Logical formLearned from6 sentences. A family can be sturdy.Logical formLearned from6 sentences. A forest of columns can be sturdy.Logical formLearned from6 sentences. A fencing can be sturdy.Logical formLearned from6 sentences.