There are 6 shapes on a 5x5 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 (1, 0)
Distance from target shape to blue square at (2, 0): 1
Distance from target shape to pink square at (4, 0): 3
Distance from target shape to yellow trapezoid at (4, 1): 4
Distance from target shape to cyan rectangle at (3, 3): 5
Distance from target shape to brown rectangle at (4, 4): 7
Closest shape is the blue square at (2, 0) with distance 1</think>

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