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 group of people on a street next to orange and white umbrellas'. Remove all words of length '9' in the given sentence.
a group of people on a street next to orange and white

Sentence: 'a herd of elephants along with a mother elephant and her baby'. Remove all words of length '8' in the given sentence.
a herd of elephants along with a mother and her baby

Sentence: 'a train going along on the tracks with graffiti written across one of the railways'. Remove all words of length '7' in the given sentence.

a train going along on the tracks with graffiti across one of the railways