Cords can be sturdy.Logical formLearned from6 sentences. Armrests can be sturdy.Logical formLearned from6 sentences. A (plastic construction) can be sturdy.Logical formLearned from6 sentences. A wheel can be sturdy.Logical formLearned from6 sentences. Shelvings can be sturdy.Logical formLearned from6 sentences. A (book shelf) can be sturdy.Logical formLearned from6 sentences. A heavy duty can be sturdy.Logical formLearned from6 sentences. A bookshelf can be sturdy.Logical formLearned from6 sentences. A (wood table) can be sturdy.Logical formLearned from6 sentences. A (bell tower) can be sturdy.Logical formLearned from6 sentences. Handrails can be sturdy.Logical formLearned from6 sentences. A foliage can be sturdy.Logical formLearned from6 sentences. A captain can be sturdy.Logical formLearned from6 sentences. A bamboo can be sturdy.Logical formLearned from6 sentences. A denim can be sturdy.Logical formLearned from6 sentences.