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: 'the black and white zebras congregate as a pack in the field'. Remove all words of length '4' in the given sentence.

Answer: the black and white zebras congregate as a in the field


Question: Sentence: 'a boy looks excitedly at his birthday cake with his friend'. Remove all words of length '9' in the given sentence.

Answer: a boy looks at his birthday cake with his friend


Question: Sentence: 'a group of elephants under a tree in a safari'. Remove all words of length '2' in the given sentence.

Answer:
a group elephants under a tree a safari