( ( Fundamental interactions ) ( ( as ( ( ( mediated ( by ( fundamental bosons ) ) ) , ) ( properties ( of ( the ( four interactions ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Fundamental) (NNS interactions)) (VP (ADVP (IN as)) (VBD mediated) (PP (IN by) (NP (JJ fundamental) (NNS bosons))) (, ,) (NP (NP (NNS properties)) (PP (IN of) (NP (DT the) (CD four) (NNS interactions))))) (. .)))
Fundamental interactions as mediated by fundamental bosons, properties of the four interactions.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS types)) (PP (IN of) (NP (NNS bosons))))) (. .)))