A form can be active.Logical formLearned from18 sentences. States can be active.Logical formLearned from18 sentences. An active ingredient may undergo concentrations.Logical formLearned from18 sentences. Active compounds may undergo a synthesis.Logical formLearned from18 sentences. Predators can be active.Logical formLearned from18 sentences. A hormone can be active.Logical formLearned from18 sentences. Some groups may remain active.Logical formLearned from18 sentences. Active fronts can be in a campaign.Logical formLearned from18 sentences. Diplomats can be active.Logical formLearned from18 sentences. A world-city may rise in active trading.Logical formLearned from18 sentences. Some active faults may run through a region.Logical formLearned from18 sentences. An active volcano may erupt.Logical formLearned from18 sentences. Drugs can be active.Logical formLearned from18 sentences. Some countries can be active.Logical formLearned from17 sentences. An artist can be active.Logical formLearned from17 sentences.