A barrel may pertain-to a pen.Logical formLearned from20 sentences. (Pen strokes) may pertain-to a person.Logical formLearned from20 sentences. A pen may pertain-to a poet.Logical formLearned from20 sentences. A (fountain pen) can be black.Logical formLearned from19 sentences. A (pen name) may undergo a use.Logical formLearned from19 sentences. A pen can be powerful.Logical formLearned from19 sentences. A pen can be broad.Logical formLearned from19 sentences. A pen can be in a right hand.Logical formLearned from19 sentences. A sound may pertain-to a pen.Logical formLearned from19 sentences. A person may get some pens.Logical formLearned from19 sentences. Pen may be poised.Logical formLearned from19 sentences. A person can be (pen pals).Logical formLearned from19 sentences. A sheep can be in a pen.Logical formLearned from19 sentences. Pens may fly.Logical formLearned from19 sentences. Pen may lope a person.Logical formLearned from19 sentences.