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 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: 'a person throwing a frisbee in a field of grass and straw'. Remove all words of length '6' in the given sentence.
a throwing a frisbee in a field of grass and straw

Sentence: 'a group of people sitting around a table eating food'. Remove all words of length '1' in the given sentence.

group of people sitting around table eating food