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.

Ex Input:
Sentence: 'a heard of black cows standing and looking at the camera'. Remove all words of length '2' in the given sentence.

Ex Output:
a heard black cows standing and looking the camera


Ex Input:
Sentence: 'a couple of airplanes sitting outside of a building'. Remove all words of length '1' in the given sentence.

Ex Output:
couple of airplanes sitting outside of building


Ex Input:
Sentence: 'a stop sign at an intersection with water in background'. Remove all words of length '1' in the given sentence.

Ex Output:

stop sign at an intersection with water in background