What is the relationship between 'Lafarge' and 'cement' in the context of the input sentence.
Options: product/material produced, developer, distribution format, original broadcaster

MANILA, July 22 (Reuters) - Aboitiz Equity Ventures Inc said it will invest 24 billion pesos ($531 million) in the cement business after formalising a deal with Irish cement maker CRH Plc (NYSE: CRH - news ) to buy the Philippine assets of Lafarge SA .
product/material produced