8481
She married Ravetch in 1946 but worked independently for ten years , finally collaborating with him in 1957 , a relationship that continued for the remainder of her career .
 person: Ravetch
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: Ravetch