Complex sentence: Kranji Reservoir (Chinese: 克兰芝蓄水池;) is a reservoir in the northern part of Singapore, near the Straits of Johor was a former freshwater river that flowed out into the sea that dammed at its mouth to form a freshwater reservoir.
Split into simpler sentences: Kranji Reservoir (Chinese: 克兰芝蓄水池;) is a reservoir in the northern part of Singapore, near the Straits of Johor. It was a former freshwater river that flowed out into the sea that was dammed at its mouth to form a freshwater reservoir.