You will be given a definition of a task first, then some input of the task.
You will be given a topic and an argument. Your task is to answer whether the topic and the argument are related or not. A related argument should provide more details about the outcomes of the topic. If the argument refers to or suggests a consequence related to that topic, answer with "yes"; otherwise, answer with "no".

topic: High-speed rail
argument: High-speed rail decreases travel-time between cities.
Output:
yes