In Unification Grammars (UGs) the content is important. Content is passed up phrase structure trees by exactly the same feature sharing mechanism that we have seen so far.
Take a phrase like sees us. If we only have a verb and its complement, we are not able to feature share for the SEER.
Just to remind you, here it is again.
This structure-sharing is kind of dynamic. It looks a bit like movement! Consider the word seem.
Rather than moving things around, we can just explain the facts by playing with the VALENCE features and CONTENT features of seem. The subject is shared between the main subject of seem and the subject of the VP[inf] complement.
Now look at the phrase to like Hanako:
Finally, we add the subject Taro and this merges with the subject of the VP [inf] and the LIKER in the CONTENT at every level.