What is the relationship between circa and company in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

"Any shift towards a more positive outlook would therefore be well received; if this is not forthcoming, given that only circa 25% of holding company cash flow is derived from its UK life entity, it would be relatively less impacted."

Answer: legal_form