Birds can be in the world.Logical formLearned from96 sentences. Songs may pertain-to birds.Logical formLearned from96 sentences. Hummingbirds can be birds.Logical formLearned from96 sentences. A bird can be adult.Logical formLearned from96 sentences. Birds may undergo a singing.Logical formLearned from96 sentences. Birds may be pictured.Logical formLearned from96 sentences. Birds can be in an area.Logical formLearned from96 sentences. A bird can be lovely.Logical formLearned from96 sentences. A percent may pertain-to birds.Logical formLearned from96 sentences. Passerine birds may be related to tits.Logical formLearned from95 sentences. Tits can be a group of passerine birds.Logical formLearned from95 sentences. Strains can be constituted-of-or-filled-with (bird flu).Logical formLearned from95 sentences. A (bird flu) can be pathogenic.Logical formLearned from95 sentences. A bird can be constituted-of-or-filled-with paradise.Logical formLearned from95 sentences. A bird can be elusive.Logical formLearned from95 sentences.