There are 3 shapes on a 10x10 grid. Which shape is closest to the brown 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: brown right_triangle at (3, 4)
Distance from target shape to orange trapezoid at (7, 6): 6
Distance from target shape to gray trapezoid at (2, 3): 2
Closest shape is the gray trapezoid at (2, 3) with distance 2</think>

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