10991
On 9 September 1963 he participated , along with John Cage and several others , in an 18-hour piano-playing marathon that was the first full-length performance of Erik Satie 's " Vexations " .
 person: John Cage; person: Erik Satie
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: John Cage; person: Erik Satie