SAO PAULO (Reuters) - Brazil's state-run oil firm Petrobras (PETR4.SA) said on Wednesday it had signed a contract to sell its 20 percent stake in the Bijupira and Salema oil and gas fields for $25 million (16 million pounds).
Utilize the input text as a context reference, choose the right relationship between 'Petrobras' and 'gas' from the options.
Options: chief executive officer, product/material produced, founded by, owned by