Q: In this task, you will be presented with a context from an academic paper and a question separated with a
. You have to answer the question based on the context.
We introduce here the use of an L-PCFG with two layers of latent states: one layer is intended to capture the usual syntactic information, and the other aims to capture semantic and topical information by using a large set of states with specific feature functions.
Question: What latent variables are modeled in the PCFG?
A:
syntactic information semantic and topical information