10124
The existence of the belt was confirmed by the Explorer 1 and Explorer 3 missions in early 1958 under Dr.  James Van Allen  at the  University of Iowa  .
 employee of: James Van Allen, University of Iowa
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: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 employee of: James Van Allen, University of Iowa