context: Some historians have actually established the Three Kingdoms and developed the Three Kingdoms period, where Goguryeo and Baekje's origins were destroyed (494), and since 562, when Gaya fell, Silla joined the Tang and collapsed Baekje. Since the term is only about 100 years until 660 years, the term Five Kingdoms, Four Kingdoms, or Nations is sometimes used.
question: When did Baekje fall?
answers.text: 660 years