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.

[EX Q]: Sentence: 'a large flock of birds flying over a field next to a  tree'. Remove all words of length '2' in the given sentence.
[EX A]: a large flock birds flying over a field next a tree

[EX Q]: Sentence: 'a person wearing blue shoes riding a skateboard'. Remove all words of length '4' in the given sentence.
[EX A]: a person wearing shoes riding a skateboard

[EX Q]: Sentence: 'a group of three people standing side by side holding nintendo wii controllers'. Remove all words of length '4' in the given sentence.
[EX A]:
a group of three people standing by holding nintendo wii controllers