A contrast can be visible.Logical formLearned from16 sentences. Contrast can be to schemes.Logical formLearned from16 sentences. Contrast can be to artists.Logical formLearned from16 sentences. Contrast can be to channels.Logical formLearned from16 sentences. Contrast can be to a section.Logical formLearned from16 sentences. Contrast can be to accounts.Logical formLearned from16 sentences. Contrast can be to a law.Logical formLearned from16 sentences. Contrast can be to a service.Logical formLearned from16 sentences. An increase can be in contrast.Logical formLearned from16 sentences. A (contrast mechanism) may be employed in obtaining an image.Logical formLearned from16 sentences. An abbreviation may designate a (contrast mechanism).Logical formLearned from16 sentences. Contrast can be to a thinking.Logical formLearned from16 sentences. Contrast can be to sports.Logical formLearned from16 sentences. A contrast can be necessary.Logical formLearned from16 sentences. Contrast can be to a willingness.Logical formLearned from16 sentences.