Complex sentence: The church has got two portals: the main one opens onto piazza Ciullo, while the side one, with the statue of Saint Olivia on it, faces on Corso 6 Aprile.
Split into simpler sentences: The church has two portals: the main one opens onto piazza Ciullo. The other side, with the statue of Saint Olivia on it, faces on Corso 6 Aprile.