Assertion: substitution | /r/HasProperty | one of the methods of cohesion
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text: In fact, substitution was one of the methods of cohesion examined by M. A. K. Halliday and Ruqaiya Hasan in 1976 in the influential text Cohesion in English and remains one of the main tools for written coherence today (Halliday and Hasan 1976).