A tree can be old.Logical formLearned from43 sentences. A (root system) may pertain-to a tree.Logical formLearned from43 sentences. A person may be surrounded by trees.Logical formLearned from43 sentences. Trees may turn.Logical formLearned from43 sentences. A photo may show a tree.Logical formLearned from43 sentences. A (directory tree) may pertain-to a person.Logical formLearned from43 sentences. Trees can be healthy.Logical formLearned from43 sentences. A circle can be constituted-of-or-filled-with trees.Logical formLearned from43 sentences. Thousands can be constituted-of-or-filled-with olive trees.Logical formLearned from43 sentences. Trees may shake.Logical formLearned from43 sentences. Some trees may be found.Logical formLearned from42 sentences. A tree can be emergent.Logical formLearned from42 sentences. A tree may be struck by lightning.Logical formLearned from42 sentences. An (oak tree) may pertain-to a person.Logical formLearned from42 sentences. A tree may be limbed.Logical formLearned from42 sentences.