Refer to the input text as context and select the correct relationship between 'Lafarge' and 'cement' from the available options.
Options: platform, product/material produced, owned by, location of formation

Birla Group on Monday said it was acquiring the cement business of Lafarge India for Rs.5,000 crore through a combination of internal accruals and fresh debt to add another 5.5 million tonnes in annual capacity.
product/material produced