Complex sentence: After Homer insults the new neighbors, a charming British family, Marge decides she is through trying to be friends with other couples, but changes her tune after hearing Lisa say that she, too, does not feel the need to welcome newcomers into her life.
Split into simpler sentences: After Homer insults their new charming British family neighbors, Marge decides she is through trying to be friends with other couples. Marge changes her tune after hearing Lisa say that she too does not feel the need to welcome newcomers into her life.