There are 4 shapes on a 5x5 grid. Which shape is closest to the gray 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: gray square at (0, 1)
Distance from target shape to brown right_triangle at (2, 4): 5
Distance from target shape to blue trapezoid at (1, 2): 2
Distance from target shape to orange right_triangle at (2, 2): 3
Closest shape is the blue trapezoid at (1, 2) with distance 2</think>

<answer>(1, 2)</answer>