Take context from the input text and decide on the accurate relationship between 'Grocon' and 'construction' from the options provided.
Options: industry, position held, currency, owned by

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