In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.
Q: Sentence: After his parents separated because of his father 's long trips , the younger La Flesche lived with his mother and her family among the Omaha . 
 Question: who were  separated?
A: 
his parents