Utilize the input text as a context reference, choose the right relationship between 'Grocon' and 'construction' from the options.
Options: position held, industry, owned by, currency

CFMEU to pay Grocon $3.5 million over blockade Australia's biggest construction union has agreed to pay more than $7 million as part of a massive settlement over its alleged "black ban" of concrete giant Boral in central Melbourne.
industry