A concern may pertain-to a president.Logical formLearned from170 sentences. Concerns can be mundane.Logical formLearned from169 sentences. Concerns can be about security.Logical formLearned from169 sentences. Concerns can be justified.Logical formLearned from169 sentences. Concern can be about an environment.Logical formLearned from169 sentences. A doctor may express concern.Logical formLearned from169 sentences. Concerns can be over earnings.Logical formLearned from169 sentences. Concern can be about (climate change).Logical formLearned from168 sentences. Concerns can be over an impact.Logical formLearned from168 sentences. Species can be constituted-of-or-filled-with least concern.Logical formLearned from168 sentences. Cost can be a concern.Logical formLearned from168 sentences. Concerns can be about an economic slowdown.Logical formLearned from167 sentences. A nature may pertain-to concerns.Logical formLearned from167 sentences. Concerns can be about a male.Logical formLearned from167 sentences. Concerns can be about stability.Logical formLearned from166 sentences.