SHANGHAI Aug 21 Safety hazards have been found at almost 70 percent of firms handling dangerous chemicals inspected in Beijing since two massive blasts killed 114 people last week, including a branch of Asia's largest refiner Sinopec Corp, state media reported.
Utilize the input text as a context reference, choose the right relationship between 'Sinopec' and 'Beijing' from the options.
Options: creator, business division, headquarters location, original broadcaster