There are 4 shapes on a 10x10 grid. Which shape is closest to the gray rectangle 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 rectangle at (0, 4)
Distance from target shape to orange right_triangle at (1, 1): 4
Distance from target shape to blue square at (2, 0): 6
Distance from target shape to pink rectangle at (7, 3): 8
Closest shape is the orange right_triangle at (1, 1) with distance 4</think>

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