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: 'people are standing near a tall steeple with a clock'. Remove all words of length '1' in the given sentence.
people are standing near tall steeple with clock

Sentence: 'a old building that has a big clock on top'. Remove all words of length '4' in the given sentence.
a old building has a big clock on top

Sentence: 'a mom a polar bear taking care of her cubs by the pool'. Remove all words of length '3' in the given sentence.

a a polar bear taking care of cubs by pool