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 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 large brown elephant wearing a red head dress'. Remove all words of length '3' in the given sentence.
a large brown elephant wearing a head dress

Sentence: 'yellow signs indicate a sharp turn in the road ahead'. Remove all words of length '1' in the given sentence.

yellow signs indicate sharp turn in the road ahead