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 dog laying in the grass chewing a stick'. Remove all words of length '6' in the given sentence.
a dog in the grass chewing a stick

Sentence: 'a white fire hydrant outside of a building with a mural on it'. Remove all words of length '4' in the given sentence.
a white hydrant outside of a building a mural on it

Sentence: 'a white polar bear stands on a wooden thing'. Remove all words of length '2' in the given sentence.

a white polar bear stands a wooden thing