When two peoples speaking different languages share a common border, there is an infiltration of words from one language to the other.
( ( When ( ( ( two peoples ) ( speaking ( different languages ) ) ) ( share ( a ( common border ) ) ) ) ) ( , ( there ( ( is ( ( an infiltration ) ( of ( words ( from ( ( one language ) ( to ( the other ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (CD two) (NNS peoples)) (VP (VBG speaking) (NP (JJ different) (NNS languages)))) (VP (VBP share) (NP (DT a) (JJ common) (NN border))))) (, ,) (NP (EX there)) (VP (VBZ is) (NP (NP (DT an) (NN infiltration)) (PP (IN of) (NP (NP (NNS words)) (PP (IN from) (NP (NP (CD one) (NN language)) (PP (TO to) (NP (DT the) (JJ other))))))))) (. .)))
The languages they are speaking about are English and Spanish.
( ( ( The languages ) ( they ( are ( speaking about ) ) ) ) ( ( are ( ( English and ) Spanish ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS languages)) (SBAR (S (NP (PRP they)) (VP (VBP are) (VP (VBG speaking) (IN about)))))) (VP (VBP are) (ADJP (JJ English) (CC and) (JJ Spanish))) (. .)))