Complex sentence: Every August, on the last Wednesday of the school summer holidays (for the central Netherlands), a historic cheese market is held, where the farmers and farmer's wives dress up in period costumes and re-enact a traditional cheese market.
Split into simpler sentences: Every August, on the last Wednesday of the school summer holidays (for the central Netherlands), a historic cheese market is held. The cheese farmers, as well as their wives, dress up in period costumes and re-enact a traditional cheese market.