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In a 1992 follow-up , Peter Hobbs and others had observed no appreciable evidence for the nuclear winter team 's predicted massive " self-lofting " effect and the oil-fire smoke clouds contained less soot than the nuclear winter modelling team had assumed .
 Peter Hobbs
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:
 Peter Hobbs