Refer to the input text as context and select the correct relationship between 'Sinopec' and 'Beijing' from the available options.
Options: chairperson, product/material produced, headquarters location, member of

These include Chinese search giant Baidu, financial services firm HSBC, instant noodle maker Tingyi, Beijing Airport and energy logistics firm Sinopec Kanton, whose share prices halved in the past week.
headquarters location