Q:Information:  - Bukit Batok (Chinese: , Tamil:  ), often abbreviated as Bt Batok, is a planning area and matured residential town straddling along the eastern boundary of the West Region of Singapore. Bukit Batok statistically ranks in as the 25th largest, the 12th most populous and the 11th most densely populated planning area in the Republic. It is bordered by six other planning areas - Choa Chu Kang to the north and northwest, Bukit Panjang to the northeast and east, Clementi to the south, Bukit Timah to the southeast, Jurong East to the southwest and Tengah to the west.  - Bukit Batok MRT Station (NS2) is an above-ground Mass Rapid Transit station on the North South Line in Bukit Batok, Singapore, and for six years part of the Branch Line until the opening of the North South Line Woodlands Extension.  - Not to be confused with the Bukit Batok Bus Depot . Bukit Batok Interchange is located at Bukit Batok Central , near West Mall Shopping Centre and Bukit Batok MRT Station . It is currently operated by SMRT Buses , with some of the routes operating from the future Bulim Bus Depot . Bukit Batok Bus Interchange is likely to be torn down with Choa Chu Kang Bus Interchange in future , to make way for newer developments and integrated transport hub .  - Singapore, officially the Republic of Singapore, and often referred to as the "Lion City" or the "Little Red Dot", is a sovereign city-state in Southeast Asia, and the world's only island city-state. It lies one degree (137 km) north of the equator, south of the southernmost tip of continental Asia and peninsular Malaysia, with Indonesia's Riau Islands to the south. Singapore's territory consists of a diamond-shaped main island along with 62 other islets. Since independence, extensive land reclamation has increased its total size by 23% (130 km), and its greening policy has covered the densely populated island with tropical flora, parks and gardens.    What object entity has the relation of 'country' with the subject 'bukit batok bus interchange'?   Choices: - chinese  - chu  - indonesia  - singapore
A:
singapore