Complex sentence: Both Henry and Kinsey are astonished to find romance beginning to bloom between William and Rosie, the proprietress of Kinsey's local Hungarian tavern, which has recently been taken over as a favourite haunt by some local sports fans.
Split into simpler sentences: Both Henry and Kinsey are astonished to find romance beginning to bloom between William and Rosie. Rosie is the proprieter of Kinsey's local Hungarian tavern, which has recently been taken over as a favorite haunt by some local sports fans.