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: 'two older men are playing with a frisbee at the park'. Remove all words of length '4' in the given sentence.
two older men are playing a frisbee at the

Sentence: 'a london bed and furniture store called happy nightmares'. Remove all words of length '3' in the given sentence.
a london furniture store called happy nightmares

Sentence: 'some people stand together on the beach with surf boards'. Remove all words of length '3' in the given sentence.

some people stand together on beach with surf boards