Complex sentence: The 900-metre Tseung Kwan O Tunnel, opened in 1990, links Kowloon and the new town at Tseung Kwan O. It was used by 68 000 vehicles daily in 2000.
Split into simpler sentences: The 900-metre Tseung Kwan O Tunnel is a tunnel in Hong Kong. Opened in 1990, links Kowloon and the new town at Tseung Kwan O. It was used by 68 000 vehicles daily in 2000.