185
An abstract theory explaining the structure of minimal surface in Riemann 's multi-dimensional space has been developed by Wang Guangyan , with the assistance of his PhD student , at the Institute of Mathematics .
 Work for: Wang Guangyan, Institute of Mathematics
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
Answer:
 Work for: Wang Guangyan, Institute of Mathematics