Sales of goods and services in undercover operations.
( ( ( Sales ( of ( ( goods and ) services ) ) ) ( in ( undercover operations ) ) ) . )
(ROOT (NP (NP (NNS Sales)) (PP (IN of) (NP (NNS goods) (CC and) (NNS services))) (PP (IN in) (NP (JJ undercover) (NNS operations))) (. .)))
Goods and services are always sold in public.
( ( ( Goods and ) services ) ( ( ( are always ) ( sold ( in public ) ) ) . ) )
(ROOT (S (NP (NP (NNP Goods)) (CC and) (NP (NNS services))) (VP (VBP are) (ADVP (RB always)) (VP (VBN sold) (PP (IN in) (NP (NN public))))) (. .)))