There are 3 shapes on a 6x6 grid. Which shape is closest to the brown trapezoid 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 trapezoid at (0, 5)
Distance from target shape to cyan right_triangle at (2, 5): 2
Distance from target shape to purple right_triangle at (1, 4): 2
Closest shape is the cyan right_triangle at (2, 5) with distance 2</think>

<answer>(2, 5)</answer>