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The most famous of Raoul 's songs is unquestionably Quant li rossignols jolis ( " When the pretty nightingales " ) , which is probably the song Johannes de Grocheo ( c. 1300 ) describes as a cantus coronatus ( crowned , meaning probably that it had received a prize in a competition ) .
 Raoul, Johannes de Grocheo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Raoul, Johannes de Grocheo