So that helped you learn about people that you had not necessarily met.
( So ( that ( ( helped ( you ( ( learn ( about people ) ) ( that ( you ( ( ( had not ) necessarily ) met ) ) ) ) ) ) . ) ) )
(ROOT (S (IN So) (NP (DT that)) (VP (VBD helped) (SBAR (S (NP (PRP you)) (VP (VBP learn) (PP (IN about) (NP (NNS people))) (SBAR (IN that) (S (NP (PRP you)) (VP (VBD had) (RB not) (ADVP (RB necessarily)) (VP (VBN met))))))))) (. .)))
They had heard about the people they learned about beforehand.
( They ( ( had ( heard ( about ( ( the people ) ( they ( learned ( about beforehand ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD had) (VP (VBN heard) (PP (IN about) (NP (NP (DT the) (NNS people)) (SBAR (S (NP (PRP they)) (VP (VBD learned) (ADVP (RB about) (RB beforehand))))))))) (. .)))