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 man with a camera on a boat'. Remove all words of length '1' in the given sentence.
man with camera on boat

Sentence: 'two birds sitting on a large rock next to a river'. Remove all words of length '5' in the given sentence.
two sitting on a rock next to a

Sentence: 'an old airplane parked next to an old car'. Remove all words of length '3' in the given sentence.
an airplane parked next to an