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.
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Question: Sentence: 'a row of park benches sitting next to a park'. Remove all words of length '7' in the given sentence.

Answer: a row of park next to a park


Question: Sentence: 'six people with a dog in the snow'. Remove all words of length '6' in the given sentence.

Answer: six with a dog in the snow


Question: Sentence: 'a couple of blacks bears playing by a fence'. Remove all words of length '2' in the given sentence.

Answer:
a couple blacks bears playing a fence