There are 3 shapes on a 7x7 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, 2)
Distance from target shape to orange square at (0, 0): 2
Distance from target shape to brown right_triangle at (2, 1): 3
Closest shape is the orange square at (0, 0) with distance 2</think>

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