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 person crashes into the water off of a surf board'. Remove all words of length '7' in the given sentence.
a person into the water off of a surf board

Sentence: 'a giraffe comes close to a visitor in its enclosure'. Remove all words of length '1' in the given sentence.
giraffe comes close to visitor in its enclosure

Sentence: 'a train runs parallel to the other tracks'. Remove all words of length '8' in the given sentence.

a train runs to the other tracks