Which sentence contains a predicate noun?
a. i feel great today.
b. those dogs are labrador retrievers.

the answern should be b, if it is the part where the mob has gathered

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,