First of all, you need to keep
original = raw_input ("Enter a word:")
Next, your conditional statement is good. It's the print statement afterwords that has an issue.
In your first try,
print str(something) is not a proper way of printing a string because Python reads
something as a variable (which you never defined anywhere). Just simply type
print(original) #where original is your variable input
I'd say your first attempt was the closest to passing this lesson, you just need to change the first print statement.