Waves can be constituted-of-or-filled-with (enemy ninja).Logical formLearned from2 sentences. A story may follow a ninja.Logical formLearned from2 sentences. A (ninja classic) may undergo a reworking.Logical formLearned from2 sentences. A (vanilla ninja) may pertain-to a country.Logical formLearned from2 sentences. A ninja may appear.Logical formLearned from2 sentences. A host can be constituted-of-or-filled-with ninjas.Logical formLearned from2 sentences. A ninja can be invisible.Logical formLearned from2 sentences. A person may be attacked by ninjas.Logical formLearned from2 sentences. A horde can be constituted-of-or-filled-with ninjas.Logical formLearned from2 sentences. Knowledge may pertain-to a ninja.Logical formLearned from2 sentences. A (ninja clan) can be evil.Logical formLearned from2 sentences. A team can be constituted-of-or-filled-with (ninja warriors).Logical formLearned from2 sentences. A ninja can be crazed.Logical formLearned from2 sentences. A hero can be a ninja.Logical formLearned from2 sentences. A ninja can be on a quest.Logical formLearned from2 sentences.