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 man is riding is surfboard in the water'. Remove all words of length '2' in the given sentence.
a man riding surfboard the water

Sentence: 'two giraffes standing next to each other next to trees'. Remove all words of length '4' in the given sentence.
two giraffes standing to other to trees

Sentence: 'an old clock sits in a persons desk'. Remove all words of length '3' in the given sentence.

an clock sits in a persons desk