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 snowboarder is sitting in the white snow'. Remove all words of length '1' in the given sentence.
snowboarder is sitting in the white snow

Sentence: 'a small child with a helmet is on skis'. Remove all words of length '2' in the given sentence.
a small child with a helmet skis

Sentence: 'four airplanes in the sky overhead on a overcast day'. Remove all words of length '3' in the given sentence.

four airplanes in overhead on a overcast