[2025-10-01T23:34:49.118230] [QUERYOME] Starting research for query 1193: '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:
A material turns to liquid on applying critical shear stress. This type of flow is called as?

Options:
A. Newtonian body
B. Bingham body
C. Dilatant
D. Pseudoplastic'
[2025-10-01T23:34:49.157327] [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:
A material turns to liquid on applying critical shear stress. This type of flow is called as?

Options:
A. Newtonian body
B. Bingham body
C. Dilatant
D. Pseudoplastic'
[2025-10-01T23:34:49.158997] Saving text to bench_final/run1/medmcqa/medmcqa_2753/pi_initial_prompt.txt
[2025-10-01T23:34:49.175527] [PI] Calling o3 for initial analysis...
[2025-10-01T23:34:53.631513] [PI] Reasoning iteration 1
[2025-10-01T23:34:53.633143] [PI reasoning] **Exploring rheology**

I’m looking into rheology and the characteristics of materials. A material that acts like a solid until it reaches a specific yield stress, then flows like a liquid, is known as a Bingham plastic—examples include toothpaste and ketchup. So, I think the answer is B. I need to provide reasoning and add citations. I’ll see if I can find useful references to support this, possibly from physiology, while I search.
[2025-10-01T23:34:53.634502] [PI] Executing function call 1: hybrid_search
[2025-10-01T23:34:53.636392] [PI] Function arguments: {'query': 'Bingham body critical shear stress yield behaves as a solid until yield stress then flows', 'k': 5, 'faiss_weight': 0.4, 'bm25_weight': 0.6, 'use_rrf': True}
[2025-10-01T23:34:53.637847] Saving JSON to bench_final/run1/medmcqa/medmcqa_2753/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-10-01T23:34:54.266864] [PI] Function hybrid_search executed successfully
[2025-10-01T23:34:54.268462] Saving JSON to bench_final/run1/medmcqa/medmcqa_2753/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-10-01T23:34:54.273197] [PI] Continuing reasoning with 1 function responses...
[2025-10-01T23:34:57.826120] [PI] Reasoning iteration 2
[2025-10-01T23:34:57.827688] [PI] No function calls found in response
[2025-10-01T23:34:57.830316] [PI] No more function calls - research complete
[2025-10-01T23:34:57.831760] Saving text to bench_final/run1/medmcqa/medmcqa_2753/pi_final_answer.txt
[2025-10-01T23:34:57.846277] [QUERYOME] Query completed successfully
