how many different group races are there at warwick farm racecourse?
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col : grp | race name | age | sex | weight | distance | date row 1 : 2 | ajc challenge stakes | open | open | wfa | 1000 | march row 2 : 2 | surround stakes | 3yo | fillies | sw | 1400 | march row 3 : 2 | warwick stakes | open | open | wfa | 1400 | august row 4 : 3 | liverpool city cup | open | open | qlty | 1300 | march row 5 : 3 | silver shadow stakes | 3yo | fillies | swp | 1200 | august row 6 : 3 | up and coming stakes | 3yo | c&g | swp | 1200 | august
how many different group races are there at warwick farm racecourse?
Grp Race Name Age Sex Weight Distance Date
2 AJC Challenge Stakes Open Open wfa 1000 March
2 Surround Stakes 3YO Fillies sw 1400 March
2 Warwick Stakes Open Open wfa 1400 August
3 Liverpool City Cup Open Open qlty 1300 March
3 Silver Shadow Stakes 3YO Fillies swp 1200 August
3 Up And Coming Stakes 3YO C&G swp 1200 August
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