task_physics__pv_diagram__pv_process_sign_choice

Summary

• Domain: physics
• Scene id: pv_diagram
• Implementation scene: pv_diagram
• Implementation source: src/trace_tasks/tasks/physics/pv_diagram/pv_process_sign_choice.py

Program Contract

Program: option_letter(select(candidate_processes, sign(volume_change(process))=target_sign)); scene=pv_diagram; scope=pv_process_sign_choice

Candidate set: the visible pressure-volume axes, process path, endpoint labels, and shaded/process direction cues inside the pv_process_sign_choice objective scope. Operands: candidate_processes (semantic_role, allowed visible_mini_pv_processes, source program_schema_concrete); process (semantic_role, allowed candidate_pv_process, source program_schema_concrete); target_sign (semantic_role, allowed negative, positive, zero, source program_schema_concrete). Operation: evaluate option_letter over the candidate set using the visible quantities, relations, branch semantics, and formulas encoded in the program expression; generation enforces a unique final answer. Output binding: answer uses the option_letter schema; The answer value is the selected visible option letter. Annotation witnesses: bbox witnesses from the finalized render. Annotation is one final-image pixel box around the process arrow in the correct mini diagram. Annotation must mark the selected visual process arrow, not the option label alone, decorative chrome, or unrelated candidates. Query ids: single.

Reasoning Operations

Families: formula_evaluation

Query Branches

Query id	Program schema
single	option_letter(select(candidate_processes, sign(volume_change(process))=target_sign)); scene=pv_diagram; scope=pv_process_sign_choice

Program Metadata

• Program signatures: physics.pv_process_sign_choice
• Base program contract: option_letter(select(candidate_processes, sign(volume_change(process))=target_sign)); scene=pv_diagram; scope=pv_process_sign_choice
• Parameter axes: scene_variant, target_sign, correct_option_letter, accent_color_name
• Arguments:
• candidate_processes: semantic_role; allowed visible_mini_pv_processes; source program_schema_concrete
• process: semantic_role; allowed candidate_pv_process; source program_schema_concrete
• target_sign: semantic_role; allowed negative, positive, zero; source program_schema_concrete
• Argument metadata status: curated
• Supported query_id values: single

Answer Contract

• Answer schema: option_letter
• Generator answer_gt.type: option_letter
• The answer value is the selected visible option letter.

Annotation Contract

• Annotation schema: bbox
• Generator annotation_gt.type: bbox
• Annotation is one final-image pixel box around the process arrow in the correct mini diagram.
• Annotation must mark the selected visual process arrow, not the option label alone, decorative chrome, or unrelated candidates.
• Annotation and answer must be projected from the same generated execution trace, not inferred from pixels or prompt text.

Prompt And Trace Requirements

• Prompt text must come from src/trace_tasks/resources/prompts/physics/pv_diagram/physics_pv_diagram_v1.json, with scene and task/query layers selected deterministically and recorded in metadata.
• Public query_id is single; the prompt branch is recorded as process_sign_choice in trace metadata.
• Render randomness, sampled fonts/styles, query operands, formula quantities, and verifier payloads must be explicit in the instance trace.
• Diagrams must keep all quantities required for the physics computation visible or explicitly stated by the task prompt contract.