Question: Princess Johanna Marina Eleoore of Hesse was orphaned at the age of fourteen months, when her family was killed in a plane crash, when the plane they were in hit what? 
Sentence (from "PMTair Flight 241"): PMTair Flight 241 (U4 241/PMT241) was a scheduled domestic passenger flight, flying from Siem Reap International Airport, Siem Reap to Sihanoukville International Airport, Sihanoukville.
Relevant evidence: No