Delete row sc_2846f7e905e7e55a from signal_candidates

id sc_2846f7e905e7e55a
status failed
signal_type opportunity_research_delta
source opportunity_research_ingestor
url https://www.sciencedirect.com/science/article/pii/ ...
headline Ni-Decorated ZnIn 2 S 4 /In(OH) 3 Composite for En ...
source_event_id evt_ec0901741208
dedupe_key opportunity_research_delta:3fab506788d67cae
claim_id NULL
claimed_by NULL
claimed_at NULL
lease_expires_at NULL
attempt_count 3
failed_at 2026-04-05T15:31:30.881246+00:00
last_error extraction_failed: Unterminated string starting at ...
output_event_id NULL
created_at 2026-04-05T02:19:27.134561+00:00
updated_at 2026-04-05T15:31:30.881246+00:00
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