1. What were the four men arrested for at Rishi Sunak's Richmond home?
Answer: The four men were arrested on suspicion of trespassing at Rishi Sunak's Richmond home.
2. Whose constituency home was targeted by the trespassers?
Answer: The trespassers targeted the constituency home of UK Prime Minister Rishi Sunak.
3. What action was taken against the four individuals who were arrested?
Answer: The four individuals were arrested by the authorities on suspicion of trespassing at Rishi Sunak's home.
4. How did the authorities respond to the incident at the PM's constituency home?
Answer: The authorities responded by arresting the four individuals who were suspected of trespassing at Rishi Sunak's Richmond home.