Complex sentence: The current site of Fermanagh College (now part of the South West College) was the former Enniskillen Gaol, many people were tried and hanged here in the square during the times of public execution.
Split into simpler sentences: The current site of Fermanagh College (now part of the South West College) was the former Enniskillen Gaol. Many people were tried and hanged here in the square during the times of public execution.