There are 5 shapes on a 9x9 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 (1, 7)
Distance from target shape to blue square at (3, 0): 9
Distance from target shape to pink trapezoid at (0, 2): 6
Distance from target shape to brown square at (0, 3): 5
Distance from target shape to red square at (7, 1): 12
Closest shape is the brown square at (0, 3) with distance 5</think>

<answer>(0, 3)</answer>