4093
In particular , superstring theory requires six compact dimensions ( 6D hyperspace ) forming a Calabi–Yau manifold .
 person: Calabi–Yau
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: Calabi–Yau