There are 6 shapes on a 10x10 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 (7, 6)
Distance from target shape to blue rectangle at (9, 1): 7
Distance from target shape to red square at (7, 0): 6
Distance from target shape to pink square at (1, 9): 9
Distance from target shape to brown rectangle at (6, 2): 5
Distance from target shape to cyan right_triangle at (8, 1): 6
Closest shape is the brown rectangle at (6, 2) with distance 5</think>

<answer>(6, 2)</answer>