Sentence:  Yet <WSD>many</WSD> psychologists and marriage counselors agree that domination of the sex relationship by one partner or the other can be unhealthy and even dangerous . 
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