<｜begin▁of▁sentence｜>### Instruction:
As a landscape designer, imagine having a garden with a 3x3 grid structure. You need to adjust the specific elements in the grid to create a beautiful and harmonious design. Start by setting the value at the second plant on the first row to 5, then replace the entire second row of plants with new ones, and finally, replace the third column with the types of plants from the first column of another garden that is filled with a particular type of plant. This requires precision and attention to detail to ensure a balanced and aesthetically pleasing layout.
### Response:
from igraph.datatypes import Matrix

# Creating a 3x3 Matrix
m = Matrix(3, 3)

# Setting the value 5 at row index 1, column index 2
m[1, 2] = 5

# Setting the second row to [7, 8, 9]
m[1] = [7, 8, 9]

# Setting the third column with values from another Matrix column
n = Matrix(3, 3)
n[2] = [1, 1, 1]
m[:, 2] = n[:, 0]

# Print the modified matrix
print(m)
<|EOT|>
