Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Unnamed: 0 | race name | circuit | date | winning driver | constructor | report |
| 1 | iv lombank trophy | snetterton | 30 march | graham hill | brm | report |
| 2 | xxiii pau grand prix | pau | 15 april | jim clark | lotus - climax | report |
| 3 | xi glover trophy | goodwood | 15 april | innes ireland | lotus - brm | report |
| 4 | iv gran premio citta di imola | imola | 21 april | jim clark | lotus - climax | report |
| 5 | xiv gran premio di siracusa | syracuse | 25 april | jo siffert | lotus - brm | report |
| 6 | xix barc aintree 200 | aintree | 27 april | graham hill | brm | report |
| 7 | xvi brdc international trophy | silverstone | 11 may | jim clark | lotus - climax | report |
| 8 | xv gran premio di roma | vallelunga | 19 may | bob anderson | lola - climax | report |
| 9 | iii solituderennen | solitudering | 28 july | jack brabham | brabham - climax | report |
| 10 | xii kanonloppet | karlskoga | 11 august | jim clark | lotus - climax | report |
| 11 | iii mediterranean grand prix | enna pergusa | 18 august | john surtees | ferrari | report |
| 12 | i austrian grand prix | zeltweg | 1 september | jack brabham | brabham - climax | report |
| 13 | x international gold cup | oulton park | 21 september | jim clark | lotus - climax | report |
Title:
1963 formula one season
Statement:
21 september is the only date listed with winning driver jim clark
Answer:
refuted