Sentence:  Other <WSD>THC</WSD> activities followed , conducted by shopping centers , department stores , recreation equipment dealers , radio - TV stations , newspapers , and other organizations interested in the need existing to acquaint youngsters with the proper use of sporting firearms and the development of correct attitudes and appreciations related to hunting and wise use of our natural resources . 
Meaning of the word marked with <WSD> tags:  any number of entities (members) considered as a unit