Typo in exercise 3d._亚博娱乐官网_亚博pt手机客户端登录

olemholt
2020-06-08T14:53:22.124Z
type:structured-message
www.uio.no

Exercise 3d mention :_x and :_y. These are supposed to be blank nodes, and it should have been _ :x and _:y.