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

<answer>(0, 1)</answer>