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 couple of giraffe standing next to a small wooden tree'. Remove all words of length '6' in the given sentence.
a of giraffe standing next to a small tree

Sentence: 'a man is wave boarding with two dogs'. Remove all words of length '3' in the given sentence.
a is wave boarding with dogs

Sentence: 'there are two pictures on the wall above the beds'. Remove all words of length '8' in the given sentence.

there are two on the wall above the beds