Utilize the input text as a context reference, choose the right relationship between 'Lafarge' and 'cement' from the options.
Options: product/material produced, owner of, chairperson, publisher

The move, part of plans to cut debt, comes after the July merger of Lafarge (EUREX: 504482.EX - news ) and Holcim to create the world's largest cement company.
product/material produced