Complex sentence: Kharkiv cathedral was consecrated in 1897 but work continued until 1901; it ended up costing over 400,000 roubles (Savelyev, 2005, p.111-112).
Split into simpler sentences: Kharkiv cathedral was consecrated in 1897 but work continued until 1901. It cost over 400,000 roubles (Savelyev, 2005, p.111-112).