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 sign post with an eagle on the top in a marshy park area'. Remove all words of length '6' in the given sentence.
a sign post with an eagle on the top in a park area

Sentence: 'a cake that is cut in pieces while sitting on a plate beside a fork'. Remove all words of length '1' in the given sentence.
cake that is cut in pieces while sitting on plate beside fork

Sentence: 'a giraffe sticks his neck out in front of another giraffe at the zoo'. Remove all words of length '4' in the given sentence.

a giraffe sticks his out in front of another giraffe at the zoo