Complex sentence: Following its initial success in the first few years, the Liri Blues Festival was shared with neighbouring towns in Ciociaria, however, since the early years of this century, Isola del Liri is once again the central location for the festival.
Split into simpler sentences: Following its initial success in the first few years, the Liri Blues Festival was shared with neighbouring towns in Ciociaria. However, since the early years of the 21st century, Isola del Liri is once again the central location for the festival.