BEIJING Aug 6 China called on Malaysia on Thursday to continue investigating what happened to a missing Malaysia Airlines flight after Kuala Lumpur said a piece of a wing that washed up on an Indian Ocean island beach last week was part of the plane's wreckage.
Utilize the input text as a context reference, choose the right relationship between 'Malaysia Airlines' and 'Kuala Lumpur' from the options.
Options: legal form, chief executive officer, chairperson, location of formation