Controlling Lexical Substitution in Computer Text Generation 
 
 This report describes Paul , a computer text generation system designed to create cohesive text through the use of lexical substitutions . Specifically, this system is designed to deterministically choose between pronominalization , superordinate substitution , and definite noun phrase reiteration . The system identifies a strength of antecedence recovery for each of the lexical substitutions , and matches them against the strength of potential antecedence of each element in the text to select the proper substitutions for these elements. 