Utilize the input text as a context reference, choose the right relationship between 'toy industry' and 'toy' from the options.
Options: parent organization, employer, product/material produced, operator

While the toy industry is fickle and the hot toy of today is the forgotten toy of tomorrow, Mattel has a portfolio of brands that have been around for decades, including Barbie, Hot Wheels, and Fisher-Price.
product/material produced