Ninja may infiltrate a castle.Logical formLearned from2 sentences. (Revenge killings) can be against ninjas.Logical formLearned from2 sentences. Ninjas may be linked to an army.Logical formLearned from2 sentences. Ninjas can be silent.Logical formLearned from2 sentences. A ninja can be in a family.Logical formLearned from2 sentences. A ninja can be in a life.Logical formLearned from2 sentences. A (ninja suit) may pertain-to a male.Logical formLearned from2 sentences. A person may expect from a ninja.Logical formLearned from2 sentences. A ninja may work.Logical formLearned from2 sentences. Ninjas can be experienced.Logical formLearned from2 sentences. (Ninja skills) can be basic.Logical formLearned from2 sentences. A ninja can be laid.Logical formLearned from2 sentences. A ninja may pertain-to a US-city.Logical formLearned from2 sentences. A ninja can be full-fledged.Logical formLearned from2 sentences. A family can be constituted-of-or-filled-with ninja.Logical formLearned from2 sentences.