In the context of the input sentence, determine the relationship between 'Manitoba Hydro' and 'electricity'.
Options: product/material produced, headquarters location, member of, distributed by

The business of hydro: Premier Greg Selinger and Manitoba Hydro interim president Darren Rainkie announced today that SaskPower will buy a minimum of 100 megawatts of electricity from Manitoba beginning in 2020.
product/material produced