Test: Checking conv1_classification.json...
SUCCESS: conv1 correctly classified as not needing reply
Reason: User ID 4 ('Mathieu Virbel') is directly mentioned in the most recent message (ID 1648095) and is also mentioned in a prior message (ID 1641637). The last message (ID 1648095) is a follow-up to a quote from him, indicating an active exchange directed at him.
conv1 classification test passed!