[word=part] [lemma=of] [lemma=our] [lemma=research] [□]
[word=part] [lemma=of] [lemma=our] [lemma=research] [□=□]
[word=part] [lemma=of] [lemma=our] [lemma=research] [□ | □]
An important part of our research activity is contributed by our research students .