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 boat in the water filled with people'. Remove all words of length '2' in the given sentence.
a boat the water filled with people

Sentence: 'a group of people at a table in a room'. Remove all words of length '6' in the given sentence.
a group of at a table in a room

Sentence: 'a cat laying down with its tongue stuck out'. Remove all words of length '5' in the given sentence.

a cat laying down with its tongue out