[2025-10-01T14:53:53.799067] [QUERYOME] Starting research for query 22: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
Calcification in enamel starts at :

Options:
A. Enamel matrix
B. Root
C. CEJ
D. DEJ'
[2025-10-01T14:53:53.879376] [PI] Starting research for query: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
Calcification in enamel starts at :

Options:
A. Enamel matrix
B. Root
C. CEJ
D. DEJ'
[2025-10-01T14:53:53.882014] Saving text to bench_final/run1/medmcqa/medmcqa_1582/pi_initial_prompt.txt
[2025-10-01T14:53:53.911717] [PI] Calling o3 for initial analysis...
[2025-10-01T14:53:59.539214] [PI] Reasoning iteration 1
[2025-10-01T14:53:59.541930] [PI reasoning] **Explaining dental enamel calcification**

I’m thinking about dental enamel calcification. It starts at the dentinoenamel junction (DEJ) and moves outward, with initial enamel formation beginning at the DEJ in the cuspal tips. So, I believe the answer would be D. I might also want to include a citation, and I could search for quick confirmation on this. It's essential to ensure that the information is accurate.
[2025-10-01T14:53:59.543446] [PI] Executing function call 1: hybrid_search
[2025-10-01T14:53:59.546784] [PI] Function arguments: {'query': 'where does enamel calcification start at dentinoenamel junction', 'k': 5, 'faiss_weight': 0.5, 'bm25_weight': 0.5, 'use_rrf': True}
[2025-10-01T14:53:59.548453] Saving JSON to bench_final/run1/medmcqa/medmcqa_1582/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-10-01T14:54:02.653282] [PI] Function hybrid_search executed successfully
[2025-10-01T14:54:02.655194] Saving JSON to bench_final/run1/medmcqa/medmcqa_1582/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-10-01T14:54:02.662269] [PI] Continuing reasoning with 1 function responses...
[2025-10-01T14:54:06.488585] [PI] Reasoning iteration 2
[2025-10-01T14:54:06.490084] [PI] No function calls found in response
[2025-10-01T14:54:06.493487] [PI] No more function calls - research complete
[2025-10-01T14:54:06.495333] Saving text to bench_final/run1/medmcqa/medmcqa_1582/pi_final_answer.txt
[2025-10-01T14:54:06.514912] [QUERYOME] Query completed successfully
