There are 6 shapes on a 4x4 grid. Which shape is closest to the blue 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: blue square at (0, 3)
Distance from target shape to gray rectangle at (0, 2): 1
Distance from target shape to red square at (3, 0): 6
Distance from target shape to green trapezoid at (1, 0): 4
Distance from target shape to orange rectangle at (0, 0): 3
Distance from target shape to brown rectangle at (3, 1): 5
Closest shape is the gray rectangle at (0, 2) with distance 1</think>

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