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During that time he travelled extensively , visiting Rome and working with Federigo Enriques , then in 1934 Princeton University , where he attended lectures by James W. Alexander , Luther P. Eisenhart , Solomon Lefschetz , Oswald Veblen , Joseph Wedderburn , and Hermann Weyl .
 location: Rome; person: Federigo Enriques; organization: Princeton University; person: James W. Alexander; person: Luther P. Eisenhart; person: Solomon Lefschetz; person: Oswald Veblen; person: Joseph Wedderburn; person: Hermann Weyl
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:
 location: Rome; person: Federigo Enriques; organization: Princeton University; person: James W. Alexander; person: Luther P. Eisenhart; person: Solomon Lefschetz; person: Oswald Veblen; person: Joseph Wedderburn; person: Hermann Weyl