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 large herd of elephants on the edge of some water'. Remove all words of length '9' in the given sentence.
a large herd of on the edge of some water

Sentence: 'a girl that looks sad sitting on the side of a street'. Remove all words of length '2' in the given sentence.
a girl that looks sad sitting the side a street

Sentence: 'a boat in the water filled with people'. Remove all words of length '2' in the given sentence.

a boat the water filled with people