There are 5 shapes on a 9x9 grid. Which shape is closest to the brown right_triangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: brown right_triangle at (2, 6)
Distance from target shape to cyan trapezoid at (0, 4): 4
Distance from target shape to red square at (0, 3): 5
Distance from target shape to pink square at (0, 0): 8
Distance from target shape to green trapezoid at (2, 1): 5
Closest shape is the cyan trapezoid at (0, 4) with distance 4</think>

<answer>(0, 4)</answer>