A (control room) may pertain-to halo.Logical formLearned from5 sentences. Haloes can be green.Logical formLearned from5 sentences. A center may pertain-to a halo.Logical formLearned from5 sentences. A (dark halo) can be milky.Logical formLearned from5 sentences. (Ultraviolet radiation) may produce a halo.Logical formLearned from5 sentences. A halo can be behind a head.Logical formLearned from5 sentences. A halo can be tenuous.Logical formLearned from5 sentences. A halo can be football-shaped.Logical formLearned from5 sentences. Spots may be depressed with a halo of tissue.Logical formLearned from5 sentences. Haloes can be spherical.Logical formLearned from5 sentences. A halo can be whitish.Logical formLearned from5 sentences. A halo can be cruciate.Logical formLearned from5 sentences. A halo can be constituted-of-or-filled-with x-rays.Logical formLearned from5 sentences. Parts may pertain-to a halo.Logical formLearned from5 sentences. Evidence can be for a halo of gas.Logical formLearned from5 sentences.