You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.

Context : At this event SunExpress welcomed its next 20 years with the delivery of the first of six newly purchased Boeing 737-800s and launched its new corporate identity including its new logo, aircraft livery, new corporate colours, uniforms and entire visual identity elements.
Subject : SunExpress
Relation : parent company
What is SunExpress's parent company?