1834
During these calls , they learned of the deaths of Gus Grissom , Ed White and Roger Chaffee in the fire .
 person: Gus Grissom; person: Ed White; person: Roger Chaffee
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: Gus Grissom; person: Ed White; person: Roger Chaffee