The firm has just named Wolfgang Reitzle as an advisory partner the very same Wolfgang Reitzle who hired Perella Weinberg as an adviser to steer the rocky $44bn (£28.2bn) merger between his Swiss cement firm Holcim and its French rival Lafarge (EUREX: 504482.EX - news ) .
What is the relationship between 'Lafarge' and 'cement' in the context of the input sentence.
Options: product/material produced, platform, position held, founded by