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 group of police officers working at a wreckage scene'. Remove all words of length '1' in the given sentence.
group of police officers working at wreckage scene

Sentence: 'a man stands wearing a suit and looking serious'. Remove all words of length '6' in the given sentence.
a man wearing a suit and looking serious

Sentence: 'a street light is in the middle of nowhere'. Remove all words of length '5' in the given sentence.

a street is in the middle of nowhere