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Shalini and her brother Prabha ( Venu Nagavally ) experience a sort of emotional trauma and loneliness in their home , especially in the presence of their adamant father ( K.P Ummer ) and their step mother ( Sukumari ) .
 Venu Nagavally, Sukumari
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Venu Nagavally, Sukumari