Give some stream of consciousness and then the answer. ' Tilak Nagar, named after freedom fighter Bal Gangadhar Tilak; is a suburban area and commercial hub in district of West Delhi, Delhi, India.

Answer this question: tilak nagar is in which zone of delhi?
This is the relevant information: ' Tilak Nagar, named after freedom fighter Bal Gangadhar Tilak; is a suburban area and commercial hub in district of West Delhi, Delhi, India.
Therefore, the answer is West Delhi.