Original sentence: Participating in a program initiated and established by the National Park of Mont Megantic in collaboration with Hydro-Quebec, the village of La Patrie has greatly reduced its light pollution, which strongly effects the Mont Megantic Observatory
Edited sentence: Participating in a program initiated and established by the National Park of Mont Megantic in collaboration with Hydro-Québec, the village of La Patrie has greatly reduced its light pollution, which strongly effects the Mont Megantic Observatory