There are 2 shapes on a 7x7 grid. Which shape is closest to the brown trapezoid 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 trapezoid at (3, 5)
Distance from target shape to gray right_triangle at (5, 4): 3
Closest shape is the gray right_triangle at (5, 4) with distance 3</think>

<answer>(5, 4)</answer>