Complex sentence: A few days later, Sayaka comes over with the missing pages she found from the diary, describing the silo incident, and how Marnie's childhood friend Kazuhiko came to rescue her.
Split into simpler sentences: A few days later, Sayaka comes over with the missing pages she found from the diary. The pages describe the incident that happened in the silo, and how Marnie's childhood friend Kazuhiko came to rescue her.