<｜begin▁of▁sentence｜>### Instruction:
As a Risk Manager, you have access to the American College football network data stored in a GML file named football.gml. Using the Louvain algorithm provided by the cdlib library, your task is to conduct community detection on this network. Additionally, you are required to compute the modularity density score to evaluate the effectiveness of the detected community structure. It is essential to print the modularity density score for further risk assessment in the context of network analysis.
### Response:
import networkx as nx
from cdlib import algorithms, evaluation

# Load the American College Football network
G = nx.read_gml('football.gml')

# Perform community detection using Louvain method
communities = algorithms.louvain(G)

# Evaluate the modularity density of the detected community structure
mod_density = evaluation.modularity_density(G, communities)

print('Modularity Density:', mod_density.score)
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