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.

Sentence: 'a girl in white blouse and black skirt holds a red tie up'. Remove all words of length '4' in the given sentence.
a in white blouse and black skirt holds a red tie up

Sentence: 'a couple of people sitting and standing next to a white bath tub'. Remove all words of length '3' in the given sentence.
a couple of people sitting standing next to a white bath

Sentence: 'a zebra stands alone in a grassy savanna'. Remove all words of length '5' in the given sentence.

a stands in a grassy savanna

