Complex sentence: Lisa (Abigail Breslin) is the ghost of a teenage girl who is almost 16 who is stuck on the same day of her death in 1985 along with her parents and her brother, who are unaware of it at first.
Split into simpler sentences: Lisa (Abigail Breslin) is the ghost of a teenage girl who is almost 16. She is stuck on the same day of her death in 1985 along with her parents and her brother, who are unaware of it at first.