Sentence:  They <WSD>were</WSD> not diplomats or jazz musicians , or even organizers of reading-rooms and photo montage displays , but rugged capitalist entrepreneurs like Henry Ford , Hugh Cooper , Thomas Campbell , the International Harvester Co. , and David W. Griffith . 
Meaning of the word marked with <WSD> tags:  work in a specific place, with a specific subject, or in a specific function