In this task, you need to count the number of vowels (letters 'a', 'e', 'i', 'o', 'u') / consonants (all letters other than vowels) in the given sentence.

Q: Sentence: 'an old train next to some empty train tracks'. Count the number of vowels in the given sentence.

A: 12
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Q: Sentence: 'the bird with purple feathers is sitting on a branch'. Count the number of consonants in the given sentence.

A: 29
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Q: Sentence: 'a skier making a turn on a snow slope'. Count the number of vowels in the given sentence.

A:
12
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