Entity:
A 62 44
null  * source 
x int 3 false false false

Entity:
B 340 53
null  * source 
y int 3 false false false

Association:
A B 1 147 52 343 59 0 br null 


Association:
B A 0 343 88 148 79 1 ar null 


Entity:
C 598 56
null  * target 
z int 3 false false false w int 3 false false false