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 gray teddy bear sitting behind an alarm clock'. Remove all words of length '6' in the given sentence.

SOLUTION: a gray teddy bear sitting an alarm clock

PROBLEM: Sentence: 'a livingroom full of furniture and lime green walls'. Remove all words of length '10' in the given sentence.

SOLUTION: a full of furniture and lime green walls

PROBLEM: Sentence: 'a tennis player is posing with a tennis racket'. Remove all words of length '4' in the given sentence.

SOLUTION:
a tennis player is posing a tennis racket