A plant may produce a stem.Logical formLearned from4 sentences. A plant may erect a stem.Logical formLearned from4 sentences. A stem can be tall.Logical formLearned from4 sentences. Hundreds can be constituted-of-or-filled-with stems.Logical formLearned from4 sentences. A tree may be cut_backed to a stem.Logical formLearned from4 sentences. Rosettes can be around a stem.Logical formLearned from4 sentences. Stems may be produced.Logical formLearned from4 sentences. Stems can be stiff.Logical formLearned from4 sentences. Stems can be upright.Logical formLearned from4 sentences. Leaves can be at a base of a stem.Logical formLearned from4 sentences. Stems can be compressed.Logical formLearned from4 sentences. A stem may have hairs.Logical formLearned from4 sentences. (Nerve stem cells) may be derived from embryonic (stem cells).Logical formLearned from4 sentences. (Stem cell) may undergo a regulation.Logical formLearned from4 sentences. A stem may pertain-to a tree.Logical formLearned from4 sentences.