BRUSSELS, July 30 (Reuters) - European Union antitrust regulators will decide by Sept. 2 whether to approve Royal Dutch Shell (LSE: RDSB.L - news ) 's planned 47 billion pound ($73.25 billion) buy of BG Group (LSE: BG.L - news ) to become the world's top liquefied natural gas company.
Refer to the input text as context and select the correct relationship between 'BG Group' and 'natural gas' from the available options.
Options: employer, location of formation, owner of, product/material produced