implemented family_relationships score ans

reasoning_gym/graphs/family_relationships.py

@@ -2,7 +2,7 @@
 from dataclasses import dataclass, field
 from enum import StrEnum
 from itertools import count
-from typing import Optional
+from typing import Any, Optional
 
 from ..factory import ProceduralDataset, register_dataset
 
@@ -356,5 +356,19 @@ def _generate_story(self, family: set[Person]) -> str:
 
         return " ".join(story_parts)
 
+    def score_answer(self, answer: Optional[str], entry: dict[str, Any]) -> float:
+        reward = 0.0
+        if answer is not None:
+            try:
+                answer_formatted = answer.strip().lower()
+                solved = answer_formatted == entry["answer"].strip().lower()
+                if solved:
+                    reward = 1.0
+                else:
+                    reward = 0.01
+            except:
+                reward = 0.01
+        return reward
+
 
 register_dataset("family_relationships", FamilyRelationshipsDataset, FamilyRelationshipsConfig)