There are 2 shapes on a 6x6 grid. Which shape is closest to the blue 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: blue rectangle at (4, 3)
Distance from target shape to yellow square at (1, 0): 6
Closest shape is the yellow square at (1, 0) with distance 6</think>

<answer>(1, 0)</answer>