Question: The 2017 Supersport 300 World Championship is the first season of the Supersport 300 World Championship, the debut season is being contested over nine races, which are held at all the European rounds of which 30th season of the Superbike World Championship?
Sentence (from "2017 Supersport 300 World Championship"): The debut season is being contested over nine races, which are held at all the European rounds of 2017 Superbike World Championship, starting from 2 April at Motorland Aragón in Spain to 22 October at Circuito de Jerez in Spain.
Relevant evidence: Yes