fix readme

README.md

@@ -167,12 +167,14 @@ Please see [NELL paper](https://www.cs.cmu.edu/~tom/pubs/NELL_aaai15.pdf) to kno
 | videogame                |              0 |              0 |                   0 |                   0 |             4 |             0 |
 
 ## Dataset Structure
-An example of `test` looks as follows.
-```
+An example of `test` looks as below.
+```shell
 {
-    "relation": "concept:sportsgamesport",
-    "head": "concept:sportsgame:n1937_world_series",
-    "tail": "concept:sport:baseball"
+  "relation": "concept:producedby",
+  "head": "Toyota Tacoma",
+  "head_type": "automobilemodel",
+  "tail": "Toyota",
+  "tail_type": "automobilemaker"
 }
 ```