[tag=PRP] [lemma=what] [tag=NNS] [tag=CC] □
[tag=PRP] [lemma=what] [tag=NNS] [tag=CC] [□]
[tag=PRP] [lemma=what] [tag=NNS] [tag=CC] □?
Most important , he and his associates talked to the people who use assistive devices , asking them what works and what does n't .