Task: Question Generation
Input (English): Passage: Ned Rochlin is a biodynamic farmer living with his girlfriend, Janet. While selling produce at a local market, Ned sells marijuana to a uniformed police officer due to the officer's claim that he had a stressful week, which made Ned feel sympathetic after initially being skeptical. Ned is then arrested on a charge of selling drugs.
Ned has three sisters: Miranda the middle sister, is a journalist for Vanity Fair trying to get her first major article published. Though she has trouble finding a man to keep her interest, she and a neighbor, Jeremy have hidden feelings for each other. Natalie, the youngest, is an independent, bisexual hipster living with her girlfriend, Cindy, and five other roommates. Liz, the oldest, is married to Dylan, a documentary filmmaker. Their marriage is failing as Dylan shows no sexual or emotional interest in Liz. They also have strict control over their son River, which leaves him unhappy and unable to express himself.
When Ned is released from prison, he returns home to his girl and his dog. He finds that she is living with Billy, and no longer wishes to continue their relationship or allow him to work at the farm. Billy gives Ned a ride into town and tells him that if he can scrape together $500 for the first 2 months rent, Janet might let him stay in the goat barn behind the farm. Ned initially stays at his mother's house but a few days later shows up at Liz's place, asking if he can stay with her. He is put in River's room and told that he must help around the house and work with Dylan on his newest documentary about a Russian ballerina named Tatiana.
Output (English): What are the names of the people who have strict control over their son?