On your first question again I'll hand over to my colleagues but I would start off by saying that the cost of the declining productivity which is close to zero at Eurovia and Vinci Energies in the process of normalization of Vinci construction.
Utilize the input text as a context reference, choose the right relationship between 'Eurovia' and 'Vinci' from the options.
Options: parent organization, operator, position held, stock exchange