There are 2 shapes on a 4x4 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 (0, 1)
Distance from target shape to gray right_triangle at (2, 1): 2
Closest shape is the gray right_triangle at (2, 1) with distance 2</think>

<answer>(2, 1)</answer>