Artificial intelligent assistant

给定一个句子,将其中所有的名词替换为与之相应的同义词。

At the park, the dog chased the ball while the children played on the swings and the family had a picnic on the grass.

At the greensward, the canine pursued the orb while the offspring frolicked on the swing and the clan had a barbecue on the lawn.

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