About: http://webisa.webdatacommons.org/3606845

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	As you can read, good at is on the list, but there is no logic compared to other words which use different prepositions.
http://www.w3.org/ns/prov#wasQuotedFrom	usingenglish.com