Complex sentence: Members of the public commented that although some events were sold out, there appeared to be many unoccupied seats at venues, and claimed that this was because the Ministry of Education (MOE) made a block purchase of 87,000 passes to be given to schools.
Split into simpler sentences: Members of the public have commented that although some events are sold out, there appear to be many unoccupied seats at venues. This is believed to be because the Ministry of Education made a block purchase of 80,000 passes to be given to schools.