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Nuclear energy was first discovered by French physicist Henri Becquerel in 1896 , when he found that photographic plates stored in the dark near uranium were blackened like X-ray plates ( X-rays had recently been discovered in 1895 ) .
 person: Henri Becquerel
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: Henri Becquerel