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: 'a cow stretching its head over a fence to eat some leaves'. Remove all words of length '4' in the given sentence.
answer:
a cow stretching its a fence to eat leaves


question:
Sentence: 'a man with a backpack waiting at a train station'. Remove all words of length '7' in the given sentence.
answer:
a man with a backpack at a train


question:
Sentence: 'a large building with a metal clock on the front'. Remove all words of length '3' in the given sentence.
answer:

a large building with a metal clock on front