Complex sentence: One day, a woman dressed in all black moves into the mansion next door and invites Bart and Jory over for tea and cookies, and explains that she is rich but has no family except for her butler, John Amos.
Split into simpler sentences: One day, a woman entirely dressed in black moves into the mansion next door and invites Bart and Jory over for tea and cookies. During this, she explains to them that she is rich but has no family except for her butler, John Amos.