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

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