There are 5 shapes on a 7x7 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, 3)
Distance from target shape to green rectangle at (2, 0): 4
Distance from target shape to gray rectangle at (0, 2): 2
Distance from target shape to purple rectangle at (6, 2): 6
Distance from target shape to blue trapezoid at (0, 4): 2
Closest shape is the gray rectangle at (0, 2) with distance 2</think>

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