adcelannotate = {"mobilepaywallcategory" : "MOBILE_PREM-NATIONAL_WORLD","nativepaywallcategory" : "NATIVE_PREM-NATIONAL_WORLD"};Barnacles encrusted on a piece of plane debris that washed up on the French island of Reunion might help unravel the mystery of missing Malaysia Airlines flight 370 that disappeared last year with 239 passengers and crew on board.