A class may be derived from an abstract (base class).Logical formLearned from2 sentences. Adjectives may be used for abstract nouns.Logical formLearned from2 sentences. A researcher can be abstract.Logical formLearned from2 sentences. A (data type model) can be abstract.Logical formLearned from2 sentences. A store can be abstract.Logical formLearned from2 sentences. A transformers can be abstract.Logical formLearned from2 sentences. Animals can be capable of abstract thought.Logical formLearned from2 sentences. A (deployment model) can be abstract.Logical formLearned from2 sentences. A (socket address) can be abstract.Logical formLearned from2 sentences. A (class filterreader) can be abstract.Logical formLearned from2 sentences. Subclasses may pertain-to an abstract class.Logical formLearned from2 sentences. An abstract class may undergo an implementation.Logical formLearned from2 sentences. An abstract class can be with some subclasses.Logical formLearned from2 sentences. A typing can be abstract.Logical formLearned from2 sentences. Abstract (data types) can be familiar from (computer science data structure curriculum).Logical formLearned from2 sentences.