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 man with a backpack waiting at a train station'. Remove all words of length '7' in the given sentence.

SOLUTION: a man with a backpack at a train

PROBLEM: Sentence: 'a man in a suit leaning on a door frame'. Remove all words of length '5' in the given sentence.

SOLUTION: a man in a suit leaning on a door

PROBLEM: Sentence: 'a young girl getting her hair brushed by an adult'. Remove all words of length '7' in the given sentence.

SOLUTION:
a young girl her hair by an adult