What is the relationship between 'Direct Line' and 'insurance' in the context of the input sentence.
Options: location of formation, chairperson, creator, product/material produced

This week Britain’s largest motor insurer, Direct Line (Other OTC: DIISY - news ) , described driverless cars as an emerging risk which could have “a major impact on the size and nature of the insurance market and the role of insurers”.
product/material produced