There are 4 shapes on a 7x7 grid. Which shape is closest to the orange 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: orange rectangle at (2, 3)
Distance from target shape to red square at (0, 0): 5
Distance from target shape to cyan trapezoid at (4, 6): 5
Distance from target shape to brown square at (5, 3): 3
Closest shape is the brown square at (5, 3) with distance 3</think>

<answer>(5, 3)</answer>