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.

[Q]: Sentence: 'an older woman playing with an interactive gaming unit'. Remove all words of length '5' in the given sentence.
[A]: an playing with an interactive gaming unit


[Q]: Sentence: 'a herd of sheep grazing on a green grass covered hill'. Remove all words of length '5' in the given sentence.
[A]: a herd of grazing on a covered hill


[Q]: Sentence: 'a small lightweight airplane flying through the sky'. Remove all words of length '7' in the given sentence.
[A]:
a small lightweight airplane flying the sky