[2025-09-30T02:13:47.128950] [QUERYOME] Starting research for query 409: '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:
Arterial supply of Submandibular gland is through which branch of ECA: 

Options:
{'A': 'Ascending pharyngeal', 'B': 'Superior pharyngeal', 'C': 'Maxillary', 'D': 'Facial'}'
[2025-09-30T02:13:47.226879] [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:
Arterial supply of Submandibular gland is through which branch of ECA: 

Options:
{'A': 'Ascending pharyngeal', 'B': 'Superior pharyngeal', 'C': 'Maxillary', 'D': 'Facial'}'
[2025-09-30T02:13:47.228392] Saving text to bench_final/run1/medmcqa/medmcqa_408/pi_initial_prompt.txt
[2025-09-30T02:13:47.246744] [PI] Calling o3 for initial analysis...
[2025-09-30T02:13:54.762300] [PI] Reasoning iteration 1
[2025-09-30T02:13:54.763775] [PI reasoning] **Identifying arterial supply**

I want to answer which branch of the external carotid artery supplies the submandibular gland. The primary supply comes from the facial artery through its glandular branches, with some contribution from the lingual branch. So the correct answer is option D: the facial artery. I don’t think a complex search is needed for this; it’s pretty straightforward. I should also look for a reliable citation, maybe referencing something like Standring Gray's to support my answer.
[2025-09-30T02:13:54.765477] [PI] Executing function call 1: hybrid_search
[2025-09-30T02:13:54.768034] [PI] Function arguments: {'query': 'submandibular gland blood supply facial artery', 'k': 5, 'faiss_weight': 0.5, 'bm25_weight': 0.5, 'use_rrf': True}
[2025-09-30T02:13:54.769309] Saving JSON to bench_final/run1/medmcqa/medmcqa_408/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-09-30T02:14:47.633248] [PI] Function hybrid_search executed successfully
[2025-09-30T02:14:47.634541] Saving JSON to bench_final/run1/medmcqa/medmcqa_408/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-09-30T02:14:47.646417] [PI] Continuing reasoning with 1 function responses...
[2025-09-30T02:14:51.865563] [PI] Reasoning iteration 2
[2025-09-30T02:14:51.867159] [PI] No function calls found in response
[2025-09-30T02:14:51.868687] [PI] No more function calls - research complete
[2025-09-30T02:14:51.873928] Saving text to bench_final/run1/medmcqa/medmcqa_408/pi_final_answer.txt
[2025-09-30T02:14:51.877447] [QUERYOME] Query completed successfully
