There are 5 shapes on a 10x10 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 (5, 4)
Distance from target shape to orange trapezoid at (3, 5): 3
Distance from target shape to blue right_triangle at (0, 2): 7
Distance from target shape to green trapezoid at (7, 2): 4
Distance from target shape to cyan right_triangle at (3, 4): 2
Closest shape is the cyan right_triangle at (3, 4) with distance 2</think>

<answer>(3, 4)</answer>