An investigation can be valid.Logical formLearned from17 sentences. An investigation may pertain-to a health-department.Logical formLearned from17 sentences. A time can be constituted-of-or-filled-with investigation.Logical formLearned from17 sentences. An investigation can be over.Logical formLearned from17 sentences. (Crime scene investigation) may solve a mystery.Logical formLearned from17 sentences. An investigation can be vital.Logical formLearned from17 sentences. An investigation can be into sexual abuse.Logical formLearned from17 sentences. An investigation can be into an abduction of japanese persons.Logical formLearned from17 sentences. An investigation can be into attacks of a month.Logical formLearned from17 sentences. (Drug possession) may undergo an investigation.Logical formLearned from17 sentences. An investigation can be into plans.Logical formLearned from17 sentences. Relation can be to investigations.Logical formLearned from17 sentences. An investigation may be prompted by complaints.Logical formLearned from17 sentences. Investigations can be into bribery.Logical formLearned from17 sentences. An investigation can be into a lab.Logical formLearned from17 sentences.