Question: The 2017 World RX of Canada was the eight round of a season that started at what location?

Context articles: 2017 World RX of Norway
2017 FIA World Rallycross Championship
2017 World RX of Barcelona
2017 World RX of Great Britain
2017 World RX of Hockenheim
2015 World RX of Norway
2017 World RX of Canada
2017 World RX of Portugal
2017 World RX of Sweden
2017 World RX of Belgium

The 2017 World RX of Norway was the sixth round of the fourth season of the FIA World Rallycross Championship.
 The event was held at the Lånkebanen near Hell, Nord-Trøndelag.
The 2017 FIA World Rallycross Championship presented by Monster Energy is the fourth season of the FIA World Rallycross Championship.
 The season consists of twelve rounds, starting on 1 April with the Spanish round at the Circuit de Barcelona-Catalunya and concluding on 12 November at the Killarney Motor Racing Complex in Cape Town, South Africa.
The 2017 World RX of Barcelona was the first round of the fourth season of the FIA World Rallycross Championship.
 The event was held at the Circuit de Barcelona-Catalunya in Montmeló, Catalonia.
The 2017 World RX of Great Britain was the fifth round of the fourth season of the FIA World Rallycross Championship.
 The event was held at Lydden Hill Race Circuit in Wootton, Kent and also played host to the fourth round of the 2017 FIA European Rallycross Championship.
 It also hosted the second round of the 2017 RX2 International Series, the support category of the World Rallycross Championship.
The 2017 World RX of Hockenheim was the third round of the fourth season of the FIA World Rallycross Championship.
 The event was held at the Hockenheimring in Hockenheim, Baden-Württemberg, alongside the Deutsche Tourenwagen Masters.
The 2015 World RX of Norway (formally the 2015 NAF World RX of Norway) was the eighth round of the second season of the FIA World Rallycross Championship.
 The event was held at the Lånkebanen in Hell, Nord-Trøndelag.
The 2017 World RX of Canada was the eighth round of the fourth season of the FIA World Rallycross Championship.
 The event was held at the Circuit Trois-Rivières in Trois-Rivières, Quebec.
The 2017 World RX of Portugal was the second round of the fourth season of the FIA World Rallycross Championship.
 The event was held at the Pista Automóvel de Montalegre in Montalegre, Vila Real.
The 2017 World RX of Sweden, formally known as the 2017 Swecon World RX of Sweden, for sponsorship reasons, was the seventh round of the fourth season of the FIA World Rallycross Championship.
 The event was held at the Höljesbanan in the village of Höljes, Värmland and also hosted round six of the European Rallycross Championship and round four of the RX2 International Series, the main support category for the World Rallycross Championship.
The 2017 World RX of Belgium was the fourth round of the fourth season of the FIA World Rallycross Championship.
 The event was held at the Circuit Jules Tacheny Mettet in Mettet, Wallonia and also played host to the third round of the 2017 FIA European Rallycross Championship.
 It also hosted the first round of the 2017 RX2 International Series, the support category of the World Rallycross Championship.