There are 6 shapes on a 5x5 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 (2, 2)
Distance from target shape to brown square at (1, 3): 2
Distance from target shape to red trapezoid at (4, 3): 3
Distance from target shape to blue trapezoid at (0, 1): 3
Distance from target shape to gray trapezoid at (3, 3): 2
Distance from target shape to green square at (4, 2): 2
Closest shape is the brown square at (1, 3) with distance 2</think>

<answer>(1, 3)</answer>