sentences:  The IJA 5th Division captured Bukit Timah Village by the evening of 11 February.Lieutenant-General Arthur Percival, General Officer Commanding of HQ Malaya Command, drew a defence perimeter covering Kallang Airfield, the MacRitchie and Peirce reservoirs and the Bukit Timah supply depot area to ensure the integrity of the city's defence.One line of the north-western defence perimeter was the Jurong-Kranji defence line, a narrow ridge connecting the sources of Sungei Jurong and the Kranji River, forming a natural defence line protecting the north-west approach to the Singapore Town.