64972
He was succeeded by Gnaeus Julius Agricola , the father-in-law of the famous historian Tacitus , in 77 .
 Gnaeus Julius Agricola, Tacitus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Gnaeus Julius Agricola, Tacitus