There are 5 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 (1, 1)
Distance from target shape to pink right_triangle at (0, 2): 2
Distance from target shape to gray square at (0, 1): 1
Distance from target shape to green trapezoid at (0, 0): 2
Distance from target shape to yellow trapezoid at (2, 1): 1
Closest shape is the gray square at (0, 1) with distance 1</think>

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