A ninja may pertain-to persons.Logical formLearned from23 sentences. A ninja may pertain-to hours.Logical formLearned from23 sentences. A person may practice (ninja training).Logical formLearned from21 sentences. A ninja can be male.Logical formLearned from20 sentences. Ninjas may pertain-to a male.Logical formLearned from20 sentences. A life may pertain-to a (brew ninja).Logical formLearned from20 sentences. A life of a (brew ninja) can be simple.Logical formLearned from20 sentences. A ninja can be evil.Logical formLearned from18 sentences. (Ninja skills) may pertain-to a female.Logical formLearned from18 sentences. Ninjas may pertain-to persons.Logical formLearned from17 sentences. An army can be constituted-of-or-filled-with ninjas.Logical formLearned from16 sentences. A ninja can be blond.Logical formLearned from16 sentences. Ninjas can be modern-day.Logical formLearned from16 sentences. Ninja may pertain-to hours.Logical formLearned from16 sentences. A ninja can be legendary.Logical formLearned from15 sentences.