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 riding a surf board in a body of water'. Remove all words of length '6' in the given sentence.
a a surf board in a body of water

Sentence: 'a brown bull with very long horns walking through a forest'. Remove all words of length '4' in the given sentence.
a brown horns walking through a forest

Sentence: 'a girl with sunglasses looking at her phone'. Remove all words of length '3' in the given sentence.

a girl with sunglasses looking at phone