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

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