Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: The parents of two-year-old Roman Campbell, who was tragically killed in a house fire on his birthday in May, have spoken out about the damage done to a luxury Gold Coast mansion they were gifted by politician Clive Palmer. This week the rental property's owners discovered the once sparkling house abandoned with around $100,000 worth of damage – including blood and faeces in the carpet, holes in the walls and cupboards ripped off their hinges. Speaking to A Current Affair, Belinda Warwick and Jared Campbell said much of the damage done to the home during the six months they lived there rent-free was through the 'pure frustration' of losing a child.Two-year-old Roman died in house fire in Beenleigh, Queensland, on his birthday in MayClive Palmer secured a beautiful home for Roman's grief-stricken parents in Helensvale on the Gold CoastRoman's father tried to save him but the toddler was trapped in the back of the houseOn Wednesday the Gold Coast mansion was found completely trashed, with doors ripped of hingesA car bought for the family of six was also found trashed and abandoned outside the property 
 Question:'I've lost a son and I couldn't explain it,' Mr _ added.

Jared Campbell