How to get "inter-term relation" between words in NLTK?

[Oliver]

Hi guys,

since days I try to figure this out. Ich googled a lot, posted on stackoverflow, but can't get an answer. Now I found you guys, hope someone is able to help me. I would be very happy :) 

So here my problem. I have a sentence/question: "How much could you rent a Volkswagen bug for in 1966?" 

I want to get the relations between the words, like in this picture 

I tried this: 

text = nltk.word_tokenize("How much could you rent a Volkswagen bug for in 1966?")
posTagged = nltk.pos_tag(text)    
n = nltk.chunk.ne_chunk(posTagged)
n.draw()

But I get only a flat tree. So how am I able to do get the relation between "How much" and "rent"? I am using python 3 and nltk 3. 

With best regards, Oliver

[Steven Bird]

Oliver – you might want to learn about semantic role labeling (not a functionality available in NLTK).
http://en.wikipedia.org/wiki/Semantic_role_labeling

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