+-----OBJ:V-N----+                               
    +OBJ:V-N+       +SUBJ:V-N+---OBJ:V-N--+MOD_POST+         
    |       |       |        |            |        |         
 __SP__ __NODE__ protein increases vasoreactivity of artery .
OBJ:V-N (__SP__,__NODE__)
OBJ:V-N (increase,__NODE__)
SUBJ:V-N (increase,protein)
OBJ:V-N (increase,vasoreactivity)
MOD_POST:N-ADJ (vasoreactivity,of)