1. Method textrankGraph() must be implemented after communityGraph() method and textrank_keyword() method.
2. It takes one mainkeyword tuple which formed like: ('bars', 1.8823393131581336).
3. The parameter 'subgraph' determines wheter the result is
subgraph of community graph or just whole community graph, which includes given mainkeyword.
4. You can use any type for graphtype parameter("community", "textrank", None), but "textrank" shows the best visualization.
textrank
subtextrankgraph
composition of subtexrankgraphs - what happend???

initial
community
subcommunity
subgraph





