input: Write a function to detect the vowel in a given string.
  
  
  def vowelCheck(inputString): 
      vowels = ['a','e','i','o','u','A','E','I','O','U'] 
      for x in inputString: 
          if x in vowels: 
              return x
  
  assert vowelCheck("Hello World") == "e"
  assert vowelCheck("Python") == "o"
  assert vowelCheck("Quick brown fox") == "u"
  assert vowelCheck("Jumps over") == "u"
  assert vowelCheck("THE LAZY DOG") == "E"
  
output: def vowelCheck(inputString): 
      vowels = ['a','e','i','o','u','A','E','I','O','U'] 
      for x in inputString: 
          if x in vowels: 
              return x