Entity extraction, sentiment analysis, quotation extraction and attribution, low-level APIs like stemming, lemmatization, translation, transliteration, dependency graph building, part of speech tagging, and more.
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and relationship extraction?
Yep, absolutely. More than "any".
What are you after?
Nice. Not after something specific, i'm interested in what's new in building semantic networks concretely from Spanish text, in the vein of askNet as in http://www.brianharrington.net/research so "any" is ok.
Oh, so then you're probably after syntactic relationships. Yes, we heavily rely on it. You may want to look at the /parse method.