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: 'a woman surfing while a man looks on behind her'. Remove all words of length '1' in the given sentence.

A: woman surfing while man looks on behind her
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Q: Sentence: 'a ram that is standing on the grass'. Remove all words of length '1' in the given sentence.

A: ram that is standing on the grass
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Q: Sentence: 'a pair of migratory birds are seen on the green carpet of grass'. Remove all words of length '9' in the given sentence.

A:
a pair of birds are seen on the green carpet of grass
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