To find Paul Barker who works in the Computer Science department of UCL 
in England, you might type the following:

person>       paul barker
department>   computer science
organisation> ucl
country>      england

The program first tries to match the COUNTRY name, then the ORGANISATION 
name, and so on.  If there is a COUNTRY called England, and within England 
there is an ORGANISATION with the word "ucl" as part of its name ...
then the query will be resolved successfully, and details about the person
displayed.

Type "? ex2" to see a more complicated example of how queries may be resolved.