Active regions may persist for tens of hours.Logical formLearned from3 sentences. Waves may pass through an active region.Logical formLearned from3 sentences. An active region may reveal itself.Logical formLearned from3 sentences. Active members may pertain-to a (college community).Logical formLearned from3 sentences. Active minds can be on campus.Logical formLearned from3 sentences. Return can be to active service.Logical formLearned from3 sentences. A veteran may serve on active duty.Logical formLearned from3 sentences. (Reserve officers) can be on active duty.Logical formLearned from3 sentences. Terms can be constituted-of-or-filled-with active duty.Logical formLearned from3 sentences. Uniformed services can be on active duty.Logical formLearned from3 sentences. An order can be to active duty.Logical formLearned from3 sentences. Active duty can be for training.Logical formLearned from3 sentences. An active ingredient may pertain-to a pesticide.Logical formLearned from3 sentences. Driver can be active.Logical formLearned from3 sentences. A ticket can be active.Logical formLearned from3 sentences.