8866
The aircraft achieved notoriety in 1928 when aircraft number 47.02 disappeared with the explorer Roald Amundsen on a rescue mission for the Italian explorer Umberto Nobile .
 person: Roald Amundsen; person: Umberto Nobile
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Roald Amundsen; person: Umberto Nobile