There are 5 shapes on a 4x4 grid. Which shape is closest to the yellow square 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 square at (0, 2)
Distance from target shape to pink right_triangle at (3, 1): 4
Distance from target shape to orange right_triangle at (2, 3): 3
Distance from target shape to gray rectangle at (0, 3): 1
Distance from target shape to blue trapezoid at (2, 0): 4
Closest shape is the gray rectangle at (0, 3) with distance 1</think>

<answer>(0, 3)</answer>