Pens can be open.Logical formLearned from32 sentences. A pen can be fat.Logical formLearned from31 sentences. A pen can be satirical.Logical formLearned from31 sentences. Pens can be purple.Logical formLearned from31 sentences. A pen can be hollow.Logical formLearned from31 sentences. A pen can be indelible.Logical formLearned from31 sentences. (Pen names) may pertain-to a male.Logical formLearned from30 sentences. A female can be a (pen name) of a female.Logical formLearned from30 sentences. A person may use a (pen tool).Logical formLearned from30 sentences. A (fountain pen) may pertain-to a female.Logical formLearned from30 sentences. Pens can be green.Logical formLearned from30 sentences. Pens can be crowded.Logical formLearned from30 sentences. A pen can be plastic.Logical formLearned from30 sentences. A (veto pen) may pertain-to a person.Logical formLearned from30 sentences. A pen may pertain-to a president.Logical formLearned from30 sentences.