There are 2 shapes on a 7x7 grid. Which shape is closest to the yellow right_triangle 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 right_triangle at (6, 5)
Distance from target shape to gray rectangle at (3, 2): 6
Closest shape is the gray rectangle at (3, 2) with distance 6</think>

<answer>(3, 2)</answer>