Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Round | Grand Prix | Pole Position | Fastest Lap | Winning Driver | Winning Constructor | Report |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Australian Grand Prix | Jacques Villeneuve | Heinz-Harald Frentzen | David Coulthard | McLaren - Mercedes | Report |
| 2.0 | Brazilian Grand Prix | Jacques Villeneuve | Jacques Villeneuve | Jacques Villeneuve | Williams - Renault | Report |
| 3.0 | Argentine Grand Prix | Jacques Villeneuve | Gerhard Berger | Jacques Villeneuve | Williams - Renault | Report |
| 4.0 | San Marino Grand Prix | Jacques Villeneuve | Heinz-Harald Frentzen | Heinz-Harald Frentzen | Williams - Renault | Report |
| 5.0 | Monaco Grand Prix | Heinz-Harald Frentzen | Michael Schumacher | Michael Schumacher | Ferrari | Report |
| 6.0 | Spanish Grand Prix | Jacques Villeneuve | Giancarlo Fisichella | Jacques Villeneuve | Williams - Renault | Report |
| 7.0 | Canadian Grand Prix | Michael Schumacher | David Coulthard | Michael Schumacher | Ferrari | Report |
| 8.0 | French Grand Prix | Michael Schumacher | Michael Schumacher | Michael Schumacher | Ferrari | Report |
| 9.0 | British Grand Prix | Jacques Villeneuve | Michael Schumacher | Jacques Villeneuve | Williams - Renault | Report |
| 10.0 | German Grand Prix | Gerhard Berger | Gerhard Berger | Gerhard Berger | Benetton - Renault | Report |
| 11.0 | Hungarian Grand Prix | Michael Schumacher | Heinz-Harald Frentzen | Jacques Villeneuve | Williams - Renault | Report |
| 12.0 | Belgian Grand Prix | Jacques Villeneuve | Jacques Villeneuve | Michael Schumacher | Ferrari | Report |
| 13.0 | Italian Grand Prix | Jean Alesi | Mika Häkkinen | David Coulthard | McLaren - Mercedes | Report |
| 14.0 | Austrian Grand Prix | Jacques Villeneuve | Jacques Villeneuve | Jacques Villeneuve | Williams - Renault | Report |
| 15.0 | Luxembourg Grand Prix | Mika Häkkinen | Heinz-Harald Frentzen | Jacques Villeneuve | Williams - Renault | Report |
| 16.0 | Japanese Grand Prix | Jacques Villeneuve | Heinz-Harald Frentzen | Michael Schumacher | Ferrari | Report |
Question:
Who was on the pole position at the monaco grand prix?
Answer:
Heinz-Harald Frentzen