There are 5 shapes on a 6x6 grid. Which shape is closest to the orange 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: orange right_triangle at (0, 2)
Distance from target shape to green right_triangle at (3, 1): 4
Distance from target shape to red right_triangle at (5, 1): 6
Distance from target shape to gray trapezoid at (0, 5): 3
Distance from target shape to yellow trapezoid at (4, 5): 7
Closest shape is the gray trapezoid at (0, 5) with distance 3</think>

<answer>(0, 5)</answer>