Sentence:  Service running through Barnumville and to Bennington County towns east of the mountains was in the hands of the `` Gleason Telephone Company '' in 1925 , but major <WSD>supervision</WSD> of telephone lines in Manchester was with the New England Telephone and Telegraph Company , which eventually gained all control . 
Meaning of the word marked with <WSD> tags:  management by overseeing the performance or operation of a person or group