A national-agency may open an investigation.Logical formLearned from15 sentences. An investigation may pertain-to a commerce-committee.Logical formLearned from15 sentences. A car may be linked to an investigation.Logical formLearned from15 sentences. Files may pertain-to an investigation.Logical formLearned from15 sentences. A trip may undergo an investigation.Logical formLearned from15 sentences. An investigation may be determined.Logical formLearned from15 sentences. (Field investigations) may undergo a division.Logical formLearned from15 sentences. An investigation may pertain-to a force.Logical formLearned from15 sentences. An investigation may be complicated.Logical formLearned from15 sentences. An investigation may hit a dead end.Logical formLearned from15 sentences. An investigation may pertain-to a football-association.Logical formLearned from15 sentences. Investigations may pertain-to authorities.Logical formLearned from15 sentences. A role can be in an investigation.Logical formLearned from15 sentences. Investigations may continue in a country.Logical formLearned from15 sentences. An investigation can be public.Logical formLearned from15 sentences.