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 training going by a field during the daytime'. Remove all words of length '8' in the given sentence.
a going by a field during the daytime

Sentence: 'the three giraffes are standing on the grassland'. Remove all words of length '2' in the given sentence.
the three giraffes are standing the grassland

Sentence: 'a toilet that has a black seat on it'. Remove all words of length '5' in the given sentence.

a toilet that has a seat on it