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 european army helicopter flying in the sky'. Remove all words of length '8' in the given sentence.
answer:
a army helicopter flying in the sky


question:
Sentence: 'a woman holds out her child to stroke the horse'. Remove all words of length '3' in the given sentence.
answer:
a woman holds child to stroke horse


question:
Sentence: 'a group of people in a field flying some kites'. Remove all words of length '5' in the given sentence.
answer:

a of people in a flying some