How do I enter a string of 2 or more words in a Ruby word array shortcut?

Question

I'm aware of the Ruby word array:

a = %w( stackoverflow serverfault superuser)

How can I use the above to display a list where each item can have 2 or more words, for instance:

a = ['stack overflow', 'server fault', 'super user']

Answer 1

a = %w( stack\ overflow server\ fault super\ user)