Question: During what race leading up to the 1994 Monaco Grand Prix was Roland Ratzenberger killed?

Documents:
source: Roland Ratzenberger
text: Roland Ratzenberger Roland Ratzenberger (] ; 4 July 1960 – 30 April 1994) was an Austrian racing driver who raced in sports prototype, British Formula 3000, Japanese Formula 3000 and Formula One. He died during qualifying for the 1994 San Marino Grand Prix, the same event at which three-time World Champion Ayrton Senna died the following day.

source: 1994 Monaco Grand Prix
text: 1994 Monaco Grand Prix The 1994 Monaco Grand Prix was a Formula One motor race held on 15 May 1994 at the Circuit de Monaco, Monte Carlo. It was the fourth race of the 1994 Formula One season, and the first following the deaths of Ayrton Senna and Roland Ratzenberger at the San Marino Grand Prix two weeks previously.

source: 2000 Monaco Grand Prix
text: 2000 Monaco Grand Prix The 2000 Monaco Grand Prix (formally the LVIII Grand Prix Automobile de Monaco) was a Formula One motor race held on 4 June 2000 at the Circuit de Monaco. It was the seventh race of the 2000 Formula One season and the 58th Monaco Grand Prix. The 78-lap race was won by McLaren driver David Coulthard after starting from third position. Rubens Barrichello finished second for the Ferrari team with Benetton driver Giancarlo Fisichella third.

source: 2012 Monaco Grand Prix
text: 2012 Monaco Grand Prix The 2012 Monaco Grand Prix (formally the Formula 1 Grand Prix de Monaco 2012) was a Formula One motor race that took take place in the principality of Monaco on 27 May 2012. It was the sixth round of the 2012 season, and the seventieth running of the Monaco Grand Prix. The race was supported by the GP2, GP3 and Formula Renault 3.5 series. Mark Webber's victory created a new record for Formula One in that there had never been six different winners of the opening six Grands Prix of the season before. Mercedes' Nico Rosberg came in second place, his second podium in the 2012 season, and Ferrari's Fernando Alonso third and taking the Formula One championship lead by three points over Vettel and Webber.

source: 2013 Monaco Grand Prix
text: 2013 Monaco Grand Prix The 2013 Monaco Grand Prix (formally known as the Grand Prix de Monaco 2013) was a Formula One motor race that took place on 26 May 2013 at the Circuit de Monaco, a street circuit that runs through the principality of Monaco. The race was won by Nico Rosberg for Mercedes AMG Petronas, repeating the feat of his father Keke Rosberg in the 1983 race. The race was the sixth round of the 2013 season, and marked the seventy-first time the Monaco Grand Prix has been held. Rosberg had started the race from pole.

source: 1976 Monaco Grand Prix
text: 1976 Monaco Grand Prix The 1976 Monaco Grand Prix (formally the XXXIV Grand Prix de Monaco) was a Formula One motor race held at the Monaco street circuit in Monaco on 30 May 1976. It was the fifth round of the 1976 Formula One season and the 34th Monaco Grand Prix. The race was contested over 78 laps of the 3.3 km circuit for a race distance of 257 kilometres.

source: 2017 Monaco Grand Prix
text: 2017 Monaco Grand Prix The 2017 Monaco Grand Prix (formally known as the Formula 1 Grand Prix de Monaco 2017) was a Formula One motor race held on 28 May 2017 at the Circuit de Monaco, a street circuit that runs through the Principality of Monaco. It was the sixth round of the 2017 season, the seventy-fifth time that the Monaco Grand Prix has been held, and the sixty-fourth time it has been a round of the Formula One World Championship since the inception of the series in .

source: Death of Ayrton Senna
text: Death of Ayrton Senna Three-time Formula One World Champion Ayrton Senna died on 1 May 1994, as a result of his car crashing into a concrete barrier while he was leading the 1994 San Marino Grand Prix at the Autodromo Enzo e Dino Ferrari in Italy. The previous day, Roland Ratzenberger had died when his car crashed during qualification for the race. His and Senna's accidents were the worst of several accidents that took place that weekend and were the first fatal accidents to occur during a Formula One race meeting in twelve years. They became a turning point in the safety of Formula One, prompting the implementation of new safety measures in both Formula One and the circuit, as well as the Grand Prix Drivers' Association to be re-established. The Italian Supreme Court of Cassation ruled that mechanical failure was the cause of the accident, although this has been disputed.

source: 1995 Monaco Grand Prix
text: 1995 Monaco Grand Prix The 1995 Monaco Grand Prix (formally the LIII Grand Prix de Monaco) was a Formula One motor race held on 28 May 1995 at the Circuit de Monaco, Monte Carlo, Monaco. It was the fifth round of the 1995 Formula One season. The 78-lap race was won by Michael Schumacher for the Benetton team after starting from second position. Damon Hill finished second for Williams after starting from pole position and leading the first 23 laps of the race, ahead of Gerhard Berger in a Ferrari car. The remaining points-scoring positions were filled by Johnny Herbert in the second Benetton, Mark Blundell (McLaren) and Heinz-Harald Frentzen (Sauber). Schumacher's win was his third of the season thus far and extended his lead in the World Drivers' Championship over Hill to five points. It was also Renault's first win in the Monaco Grand Prix, as Benetton's engine supplier.

source: 2005 Monaco Grand Prix
text: 2005 Monaco Grand Prix The 2005 Monaco Grand Prix (formally the LXIII Grand Prix de Monaco) was a Formula One motor race held on 22 May 2005 at the Circuit de Monaco in Monte Carlo, Monaco. The 78-lap race was the sixth round of the 2005 Formula One season and the 63rd running of the Monaco Grand Prix. It was won by polesitter and McLaren driver Kimi Räikkönen. Williams driver Nick Heidfeld completed the race in second position whilst his team-mate, Mark Webber, completed the podium by finishing in third place.

source: __pad__
text: __no_content__

source: __pad__
text: __no_content__

source: __pad__
text: __no_content__

source: __pad__
text: __no_content__

source: __pad__
text: __no_content__

Answer: San Marino Grand Prix