( ( Many articles ) ( ( are ( protected ( by ( ( all ( four types ) ) ( of iprs ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Many) (NNS articles)) (VP (VBP are) (VP (VBN protected) (PP (IN by) (NP (NP (DT all) (CD four) (NNS types)) (PP (IN of) (NP (NNS iprs))))))) (. .)))
Many articles are protected by all four types of iprs.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS types)) (PP (IN of) (NP (NNS bosons))))) (. .)))