Per risolvere il problema, c’è una soluzione unica che è quella di rendere davvero due distinti fabbricati quelle che ora sono due porzioni distinte di uno stesso fabbricato.
To resolve this problem, there is a unique solution which is to make really two distinct buildings those who are now two separate portions of the same building.
To solve the problem, there is a unique solution that is to make those really two separate buildings that now are two distinct parts of the same building.
To solve the problem, there is a single solution that is to make it really two distinct buildings what are now two distinct portions of the same building.