Literature as Text discusses how literature attracts linguists for two reasons: it provides data that can be analyzed linguistically, but also contains data that cannot be analyzed through linguistic models. Halliday analyzes the poem "Leda and the Swan" by looking at its nominal and verbal groups. He finds the references in the poem are anaphoric, referring back to the title. Literature deviates from grammatical rules in patterns, violating categories, sub-categories, and transformational rules. While text analysis provides one way to analyze literature, it is not a complete analysis on its own.