Assertion: frank's parent | /r/HasProperty | czechoslovakian immigrants
Facets:
Source sentences:
text: Born in 1902 to parents who were Czechoslovakian immigrants, Ray Kroc rose from humble beginnings, including stints as a paper cup salesman and jazz musician, to become one of Time's "Most Important People of the Century" by building McDonald's into the most famous and successful fast-food restaurant in the world.