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