Bug report: Don't mistakenly assign last name based on relationship

[poorna-kumar]

Example:

"Lorde and her father Bill walked into a grocery store."

Our algorithm will identify Bill as Bill Lorde, when in fact Lorde is a first name and not a last name.

One possible way to deal with this is:

1. If the person whose father Bill is (Lorde) doesn't have an identified first + last name, then we can assume they have only one name and thereby refrain from being certain about Bill's last name.

2. In general, we need to put imputed last names in brackets or express our uncertainty in some way.