There are 3 shapes on a 6x6 grid. Which shape is closest to the blue 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: blue square at (2, 0)
Distance from target shape to red trapezoid at (3, 4): 5
Distance from target shape to yellow rectangle at (4, 5): 7
Closest shape is the red trapezoid at (3, 4) with distance 5</think>

<answer>(3, 4)</answer>