There are 4 shapes on a 6x6 grid. Which shape is closest to the orange 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: orange square at (1, 1)
Distance from target shape to blue rectangle at (5, 2): 5
Distance from target shape to green trapezoid at (4, 5): 7
Distance from target shape to purple right_triangle at (0, 2): 2
Closest shape is the purple right_triangle at (0, 2) with distance 2</think>

<answer>(0, 2)</answer>