Run: 2026-03-12-01KKHZSTM6BHJ7RZ259GHQC5G0

Run Details

Model:: Grok 4.20 (Beta, Reasoning)
Test:: Data extraction
Scenario:: Contextual pronoun
Duration:: 3.0s
Cost:: $0.004142
Provider:: xAI

Evaluation summary

Score	Evaluator	Details Link
Fail	Matches text	(details)
Pass	Matches Regex	(details)
no eval	Overall

Model input

User/Human

Who does "he" refer to in the last sentence? Only return the name.

Tom and Jerry were playing in the yard. Spike, the dog, was watching them from his kennel. Suddenly, he started barking loudly.

Model response

Spike 

The pronoun "he" in "Suddenly, he started barking loudly" corefers with "Spike" (the only entity that both (a) is a male noun in the preceding clause and (b) is semantically compatible with the predicate "barking"). Tom and Jerry are mentioned earlier but are not the nearest or most plausible antecedent for an action performed by a dog.

Evaluation details

Result	Evaluator	Details	Meta Data
Fail	Matches text	Case sensitive: Spike	n/a
Pass	Matches Regex	/\bSpike\b/	n/a
no eval