There are 6 shapes on a 5x5 grid. Which shape is closest to the yellow rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: yellow rectangle at (1, 2)
Distance from target shape to brown rectangle at (2, 1): 2
Distance from target shape to red rectangle at (1, 4): 2
Distance from target shape to green right_triangle at (2, 4): 3
Distance from target shape to blue rectangle at (0, 0): 3
Distance from target shape to gray right_triangle at (0, 2): 1
Closest shape is the gray right_triangle at (0, 2) with distance 1</think>

<answer>(0, 2)</answer>