Complex sentence: With a possible zombie on the loose, Dean violently confronts Angela's father, but when Sam points out that the house is full of live plants, the boys instead focus on Neil, who is Professor Mason's teaching assistant.
Split into simpler sentences: With a possible zombie on the loose, Dean violently confronts Angela's father. But when Sam points out that the house is full of live plants, the boys instead focus on Neil, who is Professor Mason's teaching assistant.