input: Write a python function to classify a snippet's programming language.
  assert classify_snippet("Code snippet 1: Python") == "Python"
  assert classify_snippet("Code snippet 2: C/C++") == "C/C++"
  assert classify_snippet("Code snippet 3: JavaScript") == "JavaScript"
output: def classify_snippet(snippet):
      if "Python" in snippet:
          return "Python"
      elif "C/C++" in snippet:
          return "C/C++"
      elif "JavaScript" in snippet:
          return "JavaScript"
      else:
          return "Unknown"