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 city street with lots of stone buildings on both sides'. Remove all words of length '1' in the given sentence.

SOLUTION: city street with lots of stone buildings on both sides

PROBLEM: Sentence: 'a guy in a brown shirt has just hit a tennis ball'. Remove all words of length '3' in the given sentence.

SOLUTION: a in a brown shirt just a tennis ball

PROBLEM: Sentence: 'two girls wearing sunglasses with their cell phones'. Remove all words of length '5' in the given sentence.

SOLUTION:
two wearing sunglasses with cell phones