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 with a long tail is laying in a chair'. Remove all words of length '2' in the given sentence.
a dog with a long tail laying a chair

Sentence: 'a bedroom with a bed under two framed paintings'. Remove all words of length '4' in the given sentence.
a bedroom a bed under two framed paintings

Sentence: 'a long train going down the tracks through a town'. Remove all words of length '7' in the given sentence.

a long train going down the tracks a town