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.
--------
Question: Sentence: 'two birds sitting on a large rock next to a river'. Remove all words of length '5' in the given sentence.

Answer: two sitting on a rock next to a


Question: Sentence: 'tourists sit at a park while watching others in canoes'. Remove all words of length '8' in the given sentence.

Answer: sit at a park while others in canoes


Question: Sentence: 'a black youth rides his skateboard over a footbridge'. Remove all words of length '4' in the given sentence.

Answer:
a black youth rides his skateboard a footbridge