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: '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: 'a group of police officers working at a wreckage scene'. Remove all words of length '1' in the given sentence.

SOLUTION: group of police officers working at wreckage scene

PROBLEM: Sentence: 'four black cows standing in a field of grass and trees'. Remove all words of length '1' in the given sentence.

SOLUTION:
four black cows standing in field of grass and trees