What is the relationship between Hancock Prospecting and Lang Hancock 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.

Australia's richest person said her father Lang Hancock warned her that she would rue the day her late mother's shares in Hancock Prospecting were used for the children's benefit.

Answer: founded_by