142867
In 1090 , William caused his cousin Robert Curthose more problems when he waged a private war against his neighbor in Conches , Raoul II of Tosny .
 Robert Curthose, Raoul II of Tosny
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Robert Curthose, Raoul II of Tosny