Hor ee N E 
9. Ad. SNS 
ro WT ooo FP La 4 
PN A M C 
  
  
  
  
  
  
  
  
Pas {Greenlan Nes 5 / Exact “Fuzzy [Field {Greenland | Waste) 
25 126 12g [bt 125 126 \ | 18d =F) 108 
127 
Parcels A e 
Field | (Surveying) Field 
129 130 \Forest!3 132 129 | 
A2 Land use Ao 130 \Forest131 132 
I———4 e mn 
" (Photogrammetry) f iu 
  
  
Vay 
  
a 
sd 
[13s P ae 
  
UJ 
  
  
  
  
  
  
  
  
mes M 
133 
L. 195] || 136 [Pollution number | 133 
2 (Borehole) : 
De 
137 138 139 140 137 1 
Field Field Field Field S Field 
  
139 140 
Field 
  
  
  
  
[ 
Figure 5 : Exact versus fuzzy polygon overlay. 
  
  
    
i 
s-a is-a s-a 
Brooklets T (m 
a part-of ; part-of 
instance-of ; 
Rhine ;'Lake Constance ' 
  
  
  
  
Pond Conspls ...[p Association 
noae edge 
i ifi — ~ Relation 
Coordinates | |Identifier ; - Individual —» edge 
' Lake Constance concept 
  
  
  
  
  
- - 
  
; Properties 
Coordinates node 
  
  
  
  
  
  
  
  
  
Figure 6 : A semantical network for fresh water. 
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