The 5 senses. Sight, sound, smell, touch, and taste.
What happened?! ¯\_(ツ)_/¯
The correct answer is a sequence of events. As the story progresses, each event brings the story closer to resolution.
According to Boccaccio, some people believed the sins of some to be the cause of the plague. They believed that God punished them for committing sins by giving them the plague