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.

Q: Sentence: 'a mountain towers over a train going down the tracks'. Remove all words of length '4' in the given sentence.

A: a mountain towers a train going the tracks
****
Q: Sentence: 'a laptop computer with a cat hiding behind it'. Remove all words of length '6' in the given sentence.

A: a computer with a cat it
****
Q: Sentence: 'a toilet a sink a green wall and a curtain and window'. Remove all words of length '3' in the given sentence.

A:
a toilet a sink a green wall a curtain window
****