61341
The Riemann–Roch theorem and its far-reaching generalization , the Grothendieck–Riemann–Roch theorem , contain as a crucial ingredient the Todd class of the tangent bundle .
 person: Riemann–Roch; person: Grothendieck–Riemann–Roch; person: Todd
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Riemann–Roch, Grothendieck–Riemann–Roch, Todd 
Answer:
 person: Riemann–Roch; person: Grothendieck–Riemann–Roch; person: Todd