8548
Differential topology starts from the natural operations such as Lie derivative of natural vector bundles and de Rham differential of forms .
 person: Lie; person: de Rham
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: Lie; person: de Rham