In Lisp, a list looks like this:
'(rose violet daisy buttercup).
This list is preceded by a single apostrophe. It could just as well be
written as follows, which looks more like the kind of list you are likely
to be familiar with:
'(rose violet daisy buttercup)
The elements of this list are the names of the four different flowers, separated from each other by whitespace and surrounded by parentheses, like flowers in a field with a stone wall around them.