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In 1957 , Margaret Burbidge , Geoffrey Burbidge , William Fowler and Fred Hoyle showed that most of the elements in the universe have been synthesized by nuclear reactions inside stars , some like the Sun .
 person: Margaret Burbidge; person: Geoffrey Burbidge; person: William Fowler; person: Fred Hoyle
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: Margaret Burbidge; person: Geoffrey Burbidge; person: William Fowler; person: Fred Hoyle