( ( ( ( Viruses , ) ( ( a type ) ( of germ ) ) ) , ) ( ( cause ( both ( ( colds and ) flu ) ) ) . ) )
(ROOT (S (NP (NP (NNS Viruses)) (, ,) (NP (NP (DT a) (NN type)) (PP (IN of) (NP (NN germ)))) (, ,)) (VP (VBP cause) (ADJP (DT both) (JJ colds) (CC and) (JJ flu))) (. .)))
Viruses, a type of germ, cause both colds and flu.
(ROOT (S (NP (NP (DT The) (JJ common) (NN cold)) (CC and) (NP (NN flu))) (VP (VBP are) (NP (NP (NNS examples)) (PP (IN of) (NP (NP (JJ human) (NNS diseases)) (VP (VBN caused) (PP (IN by) (NP (NNS viruses)))))))) (. .)))