Question:  The drivers' world championship of the 1990 World Rally Championship was won by Carlos Sainz ahead of Didier Auriol and a Finnish rally driver who won how many world rallies?

Context paragraphs:
1990 World Rally Championship: The 1990 World Rally Championship was the 18th season of the FIA World Rally Championship.  The season consisted of 12 rallies.  The drivers' world championship was won by Carlos Sainz in a Toyota Celica GT-Four ST165, ahead of Didier Auriol and Juha Kankkunen.  The manufacturers' title was won by Lancia, ahead of Toyota and Mitsubishi.

1998 World Rally Championship: The 1998 World Rally Championship was the 26th season of the FIA World Rally Championship.  The season consisted of 13 rallies.  Tommi Mäkinen won his third consecutive drivers' world championship driving for Mitsubishi, ahead of Carlos Sainz and Colin McRae.  The manufacturers' title was won by Mitsubishi (who still operated under Group A regulations), ahead of Toyota and Subaru.  This year also marked the Ford Escort's last full-season works outing before being replaced by the Ford Focus WRC in 1999.  The season ended in dramatic fashion when Carlos Sainz's Corolla WRC stopped approximately 300 metres from the finishing line in the final stage at Margam due to mechanical failure, thus surrendering his fourth place on the rally and handing the title to Mäkinen.

1992 World Rally Championship: The 1992 World Rally Championship was the 20th season of the FIA World Rally Championship.  The season consisted of 14 rallies.  Carlos Sainz won his second drivers' world championship in a Toyota Celica GT-Four ST185, ahead of Juha Kankkunen and Didier Auriol.  The manufacturers' title was won by Lancia, ahead of Toyota and Ford.

1993 World Rally Championship: The 1993 World Rally Championship was the 21st season of the FIA World Rally Championship.  The season consisted of 13 rallies.  Juha Kankkunen won his fourth drivers' world championship in a Toyota Celica Turbo 4WD, ahead of François Delecour and Didier Auriol.  The manufacturers' title was won by Toyota, ahead of Ford and Subaru.

1999 World Rally Championship: The 1999 World Rally Championship was the 27th season of the FIA World Rally Championship.  The season consisted of 14 rallies.  Tommi Mäkinen won his fourth drivers' world championship driving for Mitsubishi, ahead of Richard Burns and Didier Auriol.  The manufacturers' title was won by Toyota, ahead of Subaru and Mitsubishi.

Juho Hänninen: Juho Ville Matias Hänninen (born 25 July 1981 in Punkaharju) is a Finnish rally driver.  He is the 2010 Intercontinental Rally Challenge (IRC) champion and 2011 Super 2000 World Rally Championship (S-WRC) champion with co-driver Mikko Markkula driving a works entered Fabia S2000 for Red Bull Škoda.  He also won the 2004 Group N Finnish Rally Championship title, and debuted in the World Rally Championship during the 2006 season.

2003 World Rally Championship: The 2003 World Rally Championship was the 31st season of the FIA World Rally Championship.  The season consisted of 14 rallies.  The drivers' world championship was won by Petter Solberg in a Subaru Impreza WRC, ahead of Sébastien Loeb and Carlos Sainz.  The manufacturers' title was won by Citroën, ahead of Peugeot and Subaru.

Juha Kankkunen: Juha Matti Pellervo Kankkunen (   ) (born 2 April 1959 in Laukaa) is a Finnish former rally driver.  His factory team career in the World Rally Championship lasted from 1983 to 2002.  He won 23 world rallies and four drivers' world championship titles, which were both once records in the series.  Sébastien Loeb has since collected more world titles, but no driver has so far been able to repeat Kankkunen's feat of becoming a world champion with three different manufacturers.

1994 World Rally Championship: The 1994 World Rally Championship was the 22nd season of the FIA World Rally Championship.  The season consisted of 10 rallies.  The drivers' world championship was won by Didier Auriol in a Toyota Celica Turbo 4WD, ahead of Carlos Sainz and Juha Kankkunen.  The manufacturers' title was won by Toyota, ahead of Subaru and Ford.

1991 World Rally Championship: The 1991 World Rally Championship was the 19th season of the Fédération Internationale de l'Automobile (FIA) World Rally Championship (WRC).  The season consisted of 14 rallies.  The drivers' world championship was won by Juha Kankkunen in a Lancia Delta Integrale 16V, ahead of Carlos Sainz and Didier Auriol.  The manufacturers' title was won by Lancia, ahead of Toyota and Mitsubishi.

Supporting paragraphs: 1990 World Rally Championship Juha Kankkunen
Answer: 23