In the context of the input sentence, determine the relationship between 'gamers' and 'video game'.
Options: director/manager, business division, stock exchange, product/material produced

SAN FRANCISCO, Sept 25 Video gamers who live-stream their matches online and the throngs of fans who tune in daily to watch them swarmed a first-of-its kind convention in San Francisco on Friday, as interest swells in the medium of online video game broadcasting.
product/material produced