Chlorofluorocarbons may destroy an (ozone layer).Logical formLearned from15 sentences. Layers can be constituted-of-or-filled-with clay.Logical formLearned from15 sentences. Some layers can be constituted-of-or-filled-with leaves.Logical formLearned from15 sentences. A layer can be constituted-of-or-filled-with comfort.Logical formLearned from15 sentences. Layers can be constituted-of-or-filled-with (semiconductor material).Logical formLearned from15 sentences. A layer can be constituted-of-or-filled-with jelly.Logical formLearned from15 sentences. Layers can be interfacial.Logical formLearned from15 sentences. Layers can be elastic.Logical formLearned from15 sentences. A layer can be constituted-of-or-filled-with hay.Logical formLearned from15 sentences. A layer can be constituted-of-or-filled-with dew.Logical formLearned from15 sentences. A layer can be powerful.Logical formLearned from15 sentences. Elements can be in a layer.Logical formLearned from15 sentences. Layers can be constituted-of-or-filled-with working persons.Logical formLearned from15 sentences. Layers can be middle-class.Logical formLearned from15 sentences. A (plug layer) can be black.Logical formLearned from15 sentences.