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: 'group of people gathering to ski and snowboard on side of mountain'. Remove all words of length '2' in the given sentence.
group people gathering ski and snowboard side mountain

Sentence: 'a giraffe comes close to a visitor in its enclosure'. Remove all words of length '1' in the given sentence.
giraffe comes close to visitor in its enclosure

Sentence: 'a zebra in a tall grassy field watching deer in the background'. Remove all words of length '2' in the given sentence.

a zebra a tall grassy field watching deer the background