Question: Which scientist is known for writing Philosophi Naturalis Principia Mathematica?
SPARQL query: SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/property/knownFor> <http://dbpedia.org/resource/Philosophiæ_Naturalis_Principia_Mathematica> }
Answer: [Isaac Newton] wrote Philosophi Naturalis Principia Mathematica.