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 woman standing at a counter in an empty restaurant'. Remove all words of length '7' in the given sentence.

SOLUTION: a woman standing at a in an empty restaurant

PROBLEM: Sentence: 'a man is crouched down by a big elephant'. Remove all words of length '3' in the given sentence.

SOLUTION: a is crouched down by a elephant

PROBLEM: Sentence: 'a man and a woman holding wine glasses and looking at their cellular phones'. Remove all words of length '3' in the given sentence.

SOLUTION:
a a woman holding wine glasses looking at their cellular phones