Run: 2026-03-12-01KKHZF9ZWY74FYC4AEAKQ5ETM

Run Details

Model:: Grok 4.20 (Beta, Reasoning)
Test:: Data extraction
Scenario:: Contextual pronoun
Duration:: 2.6s
Cost:: $0.003920
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" follows immediately after the clause introducing Spike as the dog watching from his kennel; standard anaphora resolution links it to the most recent and semantically compatible antecedent (a dog that barks). Tom and Jerry are plural "them" in the prior clause and are not described as barking, reinforcing the reference to Spike.

Evaluation details

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