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 sail boat riding through the water while an airplane takes off in the background'. Remove all words of length '2' in the given sentence.

Ex Output:
a sail boat riding through the water while airplane takes off the background


Ex Input:
Sentence: 'the player hold his raquet in stance as he hits the tennis ball'. Remove all words of length '2' in the given sentence.

Ex Output:
the player hold his raquet stance hits the tennis ball


Ex Input:
Sentence: 'a bear rolling on his back on some logs'. Remove all words of length '2' in the given sentence.

Ex Output:

a bear rolling his back some logs