input: def vowelCheck(inputString: str) -> str:
      """
      Detect the first vowel in a given string.
      >>> vowelCheck("Hello World")
      'e'
      >>> vowelCheck("Python Programming")
      'o'
      """
      vowels = ['a','e','i','o','u','A','E','I','O','U']
      for x in inputString:
          if x in vowels:
              return x
output:     return ''