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 wood bench is sitting near a pole'. Remove all words of length '7' in the given sentence.
a wood bench is near a pole

Sentence: 'a ram that is standing on the grass'. Remove all words of length '1' in the given sentence.
ram that is standing on the grass

Sentence: 'a small refrigerator sitting in a small room'. Remove all words of length '12' in the given sentence.

a small sitting in a small room