Sentence:  The Federal Government is aiding local governments in several places to survey residential , commercial and industrial buildings to determine what fallout protection they would provide , and for how <WSD>many</WSD> people . 
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