TASK DEFINITION: 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.
PROBLEM: Sentence: 'a number of benches at the beach and a boat in the sea'. Remove all words of length '7' in the given sentence.

SOLUTION: a number of at the beach and a boat in the sea

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

SOLUTION: a a surf board in a body of water

PROBLEM: Sentence: 'a surfer is riding a medium sized wave in the ocean'. Remove all words of length '3' in the given sentence.

SOLUTION:
a surfer is riding a medium sized wave in ocean

