2113
Most remarkably , in late 1950 s , algebraic varieties were subsumed into Alexander Grothendieck 's concept of a scheme .
 person: Alexander Grothendieck
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: Alexander Grothendieck