Complex sentence: A toga party is a type of costume party with a Roman or Greek theme and in which male and female attendees are expected to wear a toga, or a semblance thereof, normally made from a bed sheet, and sandals.
Split into simpler sentences: A toga party is a type of costume party with a Roman or Greek theme. Attendees are expected to wear a toga, or a semblance thereof, normally made from a bed sheet, and sandals.