<｜begin▁of▁sentence｜>### Instruction:
Given the American College football dynamic graph which you can read from a snapshot GML file named football.gml, can you use the TILES function in cdlib to perform community detection on this temporal network? The output should be the JSON representation of the detected communities over time.
### Response:
import networkx as nx
import dynetx as dn
from cdlib import algorithms

# Load a dynamic graph
G = dn.read_snapshots('football.gml', timestamp_format='%Y-%m-%d')

# Apply TILES algorithm for community detection
coms = algorithms.tiles(G, obs=1)

# Generate JSON representation
coms_json = coms.to_json()
print(coms_json)
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