Cooperation can be on an investigation.Logical formLearned from15 sentences. Investigations may pertain-to the police.Logical formLearned from15 sentences. An investigation can be into a (shooting incident).Logical formLearned from15 sentences. An investigation may grow.Logical formLearned from15 sentences. A public prosecutor may open an investigation.Logical formLearned from15 sentences. An investigation can be into a massacre.Logical formLearned from15 sentences. A (police investigation) may determine that something-is-the-case.Logical formLearned from15 sentences. An investigation can be egyptian.Logical formLearned from15 sentences. An investigation can be into violence.Logical formLearned from15 sentences. A number of investigations may be categorised.Logical formLearned from15 sentences. An (investigation team) may conclude that something-is-the-case.Logical formLearned from15 sentences. A (police officer) may undergo an investigation.Logical formLearned from15 sentences. A military may launch an investigation.Logical formLearned from15 sentences. Some leads can be in an investigation of (plane crashes).Logical formLearned from15 sentences. (Plane crashes) may undergo an investigation.Logical formLearned from15 sentences.