Simplify the following text for a Grade 8 native English-speaking person.
Original: Three national flags are hoisted while the corresponding national anthems are played : the flag of Greece , to honor the birthplace of the Olympic Games ; the flag of the current host country , and the flag of the country hosting the next Summer or Winter Olympic Games .
Simplified: Three national flags are hoisted while the corresponding national anthems are played . The flag of Greece to honor the birthplace of the Olympic Games .