Table:
text: 2008 European Taekwondo Championships
Medal table
Medal table
Rank_ Nation Gold Silver Bronze Total
16 Poland 0 0 1 1
16 Serbia 0 0 1 1
16 Bulgaria 0 0 1 1
16 Israel 0 0 1 1
16 Belarus 0 0 1 1
16 Czech Republic 0 0 1 1
16 Norway 0 0 1 1
Total Total 16 16 32 64

text: 2008 European Taekwondo Championships
Medal table
Medal table
Rank_ Nation Gold Silver Bronze Total
1 Turkey 3 3 3 9
2 Germany 3 1 3 7
3 Spain 2 1 2 5
4 Greece 2 0 1 3
5 France 1 2 3 6
6 Russia 1 1 1 3
7 Sweden 1 1 1 3
8 Azerbaijan 1 1 0 2
8 Croatia 1 1 0 2
10 Armenia 1 0 0 1
11 United Kingdom 0 2 2 4
12 Italy 0 1 5 6
13 Ukraine 0 1 1 2
14 Austria 0 1 0 1
15 Netherlands 0 0 2 2
16 Denmark 0 0 1 1

Question: What is the average bronze score when gold is more than 0, the nation is Greece and silver is less than 0 for the 2008 European Taekwondo Championships?