Question: In which university, did Rudolf Virchow conduct his research, that has less than 22,128 undergraduates?
Answer(s):
answer: Humboldt University of Berlin

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.011kz4)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.011kz4 ns:people.person.employment_history ?y .
?y ns:business.employment_tenure.company ?x .
?x ns:education.university.number_of_undergraduates ?c .
?c ns:measurement_unit.dated_integer.number ?num .
FILTER (xsd:integer(?num) < 22128) . 
}