When parsing a sentence, are all possible sentence constructions considered in parallel, or is just one syntactic structure considered? Read this: “The fireman told the man that he had risked his life for to install a smoke detector”Did it make sense? The fact that it probably didn’t implies that not all syntactic frames were consideredHowever, semantics can bias syntax. E.g. if preceded by “The fireman braved a dangerous fire in a hotel. He rescued one of the men at great danger to himself”