Predicate: 买
Roleset id: 买.01, buy, purchase Source: buy.01 (buy.01)
Roles:
       
A0:
buyer
       
A1:
thing bought
       
A2:
seller
       
A3:
price paid
       
A4:
benefactive
Example:
       
我 也 会 为 你 买 嫁妆
       
A0: 我
       
A4: 你
       
Rel: 买
       
A1: 嫁妆