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Among his pupils were Josef Tichatschek , creator of Wagner 's Rienzi and Tannhäuser , the Austrian tenor Heinrich Kreutzer and Sophie Löwe , one of the most famous opera singers of her time .
 person: Josef Tichatschek; person: Heinrich Kreutzer; person: Sophie Löwe
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: Josef Tichatschek, Heinrich Kreutzer, Sophie Löwe 
Answer:
 person: Josef Tichatschek; person: Heinrich Kreutzer; person: Sophie Löwe