instruction:
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.
question:
Context : Lumileds Lighting was formed in November 1999 as a joint venture between Philips Lighting and Agilent Technologies. 
Subject : Lumileds 
Relation : parent company
answer:
What company is Lumileds part of?


question:
Context : Dorchester Collection is a luxury hotel operator owned by the Brunei Investment Agency (BIA), an arm of the Ministry of Finance of Brunei. 
Subject : Dorchester Collection 
Relation : parent company
answer:
Which company is the parent company of Dorchester Collection?


question:
Context : The Lathen train collision occurred on 22 September 2006 when a Transrapid magnetic levitation (or ``maglev'') train collided with a maintenance vehicle near Lathen, Germany, killing 23 people. 
Subject : Lathen train collision 
Relation : point in time
answer:

The date of Lathen train collision?