There are 3 shapes on a 6x6 grid. Which shape is closest to the yellow 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: yellow rectangle at (1, 0)
Distance from target shape to cyan rectangle at (3, 5): 7
Distance from target shape to blue square at (5, 0): 4
Closest shape is the blue square at (5, 0) with distance 4</think>

<answer>(5, 0)</answer>