Analyze a sentence (5)
I believe the answer is:
parse
'analyze a sentence' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for parse that I've seen before include "do grammatical analysis" , "Analyse sentence" , "Analyse syntactically" , "Resolve (a sentence) into its constituent parts" , "Deconstruct grammatically" .)