TASK DEFINITION: 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.
PROBLEM: Sentence: 'a bus is stopped while three people are crossing'. Remove all words of length '1' in the given sentence.

SOLUTION: bus is stopped while three people are crossing

PROBLEM: Sentence: 'two sheep stop to rest on top of a hill'. Remove all words of length '1' in the given sentence.

SOLUTION: two sheep stop to rest on top of hill

PROBLEM: Sentence: 'the two surfers are walking down the beach'. Remove all words of length '4' in the given sentence.

SOLUTION:
the two surfers are walking the beach