// Define the side effect, but don't run it yet
Video footage showed the plane on the ground and badly damaged vehicles. In other videos, people could be seen running away from the tear gas and police officers, some holding shields, forming a line. Some in the crowds are seen throwing rocks.
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吳先生說問卷流於空泛，「現在不可以令我想到下一步怎樣做。」
Imagine a vast shopping mall parking lot with thousands of individual parking spots and internal lanes (representing road segments within a cluster). No matter how complex it is inside, there are usually only a few key exits to the main roads. Our goal was to identify these natural "exits" for each map cluster. For instance, the complex road network around Amsterdam Airport Schiphol (see on OpenStreetMap) has many internal roads but limited primary access points.