What is the relationship between 'Lafarge' and 'LafargeHolcim' in the context of the input sentence.
Options: publisher, creator, brand, parent organization

LafargeHolcim said it will present the financial results of Lafarge and Holcim as standalone companies for the first half of this year on July 29 adding the first combined interim results of the new group will be presented for the three quarters of 2015.
parent organization