Sentence:  It is interesting to note how many of the plants on Massachusetts ' Route 128 draw <WSD>most</WSD> of their income either from the government in non-competitive cost-plus arrangements , or from the exploitation of patents which grant at least a partial monopoly . 
Meaning of the word marked with <WSD> tags:  the superlative of `much' that can be used with mass nouns and is usually preceded by `the'; a quantifier meaning the greatest in amount or extent or degree