instruction:
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.
question:
Sentence: 'boats sailing along a river next to a cliff with buildings on it'. Remove all words of length '4' in the given sentence.
answer:
boats sailing along a river to a cliff buildings on it


question:
Sentence: 'a large flock of birds flying over a field next to a  tree'. Remove all words of length '2' in the given sentence.
answer:
a large flock birds flying over a field next a tree


question:
Sentence: 'a blue bus on the road that has a sign that says children crossing'. Remove all words of length '1' in the given sentence.
answer:

blue bus on the road that has sign that says children crossing