1548
He wrote about whether they were above or below the clouds , and recalled that under Tiberius , an aurora formed above the port city of Ostia that was so intense and red that a cohort of the army , stationed nearby for fire duty , galloped to the rescue .
 person: Tiberius; location: Ostia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: Tiberius; location: Ostia