There are 5 shapes on a 6x6 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 (2, 3)
Distance from target shape to green trapezoid at (1, 0): 4
Distance from target shape to blue square at (1, 1): 3
Distance from target shape to orange trapezoid at (0, 3): 2
Distance from target shape to yellow square at (4, 2): 3
Closest shape is the orange trapezoid at (0, 3) with distance 2</think>

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