An activity may pertain-to a sympathetic nervous system.Logical formLearned from15 sentences. A central nervous system may include a brain.Logical formLearned from15 sentences. A playing can be nervous.Logical formLearned from15 sentences. A play can be nervous.Logical formLearned from15 sentences. Terrorists can be nervous.Logical formLearned from15 sentences. A person may be got nervous.Logical formLearned from15 sentences. Pressure can be nervous.Logical formLearned from15 sentences. A central nervous system may undergo a deterioration.Logical formLearned from15 sentences. Investors may remain nervous that something-is-the-case.Logical formLearned from15 sentences. Investors can be nervous about an outlook.Logical formLearned from15 sentences. Some sides can be nervous.Logical formLearned from15 sentences. Persons can be nervous about the economy.Logical formLearned from15 sentences. A nervous system may undergo a stimulation.Logical formLearned from14 sentences. A mind can be nervous.Logical formLearned from14 sentences. A central nervous system may be affected.Logical formLearned from14 sentences.