In this task, you need to remove all words of a given length in the sentence. The number of letters in a word determine its length, for example, the length of the word "apple" is 5.
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Question: Sentence: 'a man playing a video game on the nintendo wii'. Remove all words of length '3' in the given sentence.

Answer: a playing a video game on nintendo


Question: Sentence: 'a man is crouched down by a big elephant'. Remove all words of length '3' in the given sentence.

Answer: a is crouched down by a elephant


Question: Sentence: 'a hot dog with mayo and ketchup on a paper tray'. Remove all words of length '4' in the given sentence.

Answer:
a hot dog and ketchup on a paper