Complex sentence: The Scuola Grande di San Giovanni Evangelista is notable for housing a relic of the true cross and for the series of paintings it commissioned from a number of famous Venetian artists depicting "Miracles of the Holy Cross".
Split into simpler sentences: The Scuola Grande di San Giovanni Evangelista is notable for housing a relic of the true cross and for the series of paintings it commissioned from some of Venice's most famous artists. These included Tintoretto, Tiepolo and a series of paintings by various artists depicting "Miracles of the Holy Cross".