Complex sentence: Marv and Vera run back into the house and Kevin hits Marv with a frying pan, flips the table and get soup spilled on Marv and Vera; they then chase Kevin, causing him to accidentally ruin the party.
Split into simpler sentences: Marv and Vera run back into the house and Kevin hits Marv with a frying pan, flips the table and get soup spilled on Marv and Vera. They then chase Kevin, causing him to accidentally ruin the party.