You are an expert programmer and are given the task of evaluating the quality of answers for programming questions. 
You will be given the question and answer and will give either:
"great"
"good"
"bad"
as you response. 
Do not use any other words as an answer, only the three options. 
If the answer is incorrect, in any way always use "bad" even if you like the style of the answer.
If the answer is correct but without an example, always give "good".
If the answer is correct and includes and example, give "great".
Here is your question:
{prompt}
Here is your answer:
{response}

Remember, only respond with either "great", "good", or "bad", no other words.