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: 'fire burning in a fireplace in a bright living room'. Remove all words of length '6' in the given sentence.
fire burning in a fireplace in a room

Sentence: 'a small boy sitting on the grass with a suitcase'. Remove all words of length '4' in the given sentence.
a small boy sitting on the grass a suitcase

Sentence: 'three sheep with horns standing in a grass field'. Remove all words of length '8' in the given sentence.

three sheep with horns in a grass field