input: Write a function that takes two strings and returns true if the first string contains the second.
  
  def check_contains(query, word): 
      if query.find(word) != -1:
          return True
      return False
  
  assert check_contains("catering", "cat")==True
  assert check_contains("elephant", "ant")==True
  assert check_contains("zebra", "dog")==False
  assert check_contains("rhinoceros", "rhino")==True
  assert check_contains("dragon", "gon")==True
output: def check_contains(query, word): 
      if query.find(word) != -1:
          return True
      return False