Sentence:  The causes of the decline of the commuter railroads are <WSD>many</WSD> and complex - high taxes , losses of revenue to Government subsidized highway and air carriers , to name but two . 
Meaning of the word marked with <WSD> tags:  a quantifier that can be used with count nouns and is often preceded by `as' or `too' or `so' or `that'; amounting to a large but indefinite number