Question: For which accomplishment in Bulgarian football is the professional footballer who plays for Indian Super League club Kerala Blasters, and whose name is used for the Foundation where Ana-Maria Yanakieva, a singer from the music label Virginia Records was a scholar, considered the all-time leader?
Sentence (from "Dimitar Berbatov"): A striker, he captained the Bulgaria national team from 2006 to 2010, and is the country's all-time leading goalscorer.
Relevant evidence: Yes