User blog comment:Blackbird625/Numerous Listing Errors/@comment-24733878-20140714154526/@comment-23790884-20140714162940

It's correct for several reasons. Take this example:

The ones going to the convention were the elephants, George Washington and Abraham Lincoln.

So the elephants, which are ___ and ___?

Is this statement directed to the two people?

There is ambiguity.

The ones going to the convention were the elephants, George Washington, and Abraham Lincoln.

Now we know that elephants are going to the convention with George Washington and Abraham Lincoln.