In about a quarter of an hour the bell rang, and Tuppence repaired to the hall to show the visitor out.
( ( ( ( ( ( In ( ( about ( a quarter ) ) ( of ( an hour ) ) ) ) ( ( the bell ) rang ) ) , ) and ) ( Tuppence ( ( repaired ( to ( the hall ) ) ) ( to ( ( show ( the visitor ) ) out ) ) ) ) ) . )
(ROOT (S (S (PP (IN In) (NP (NP (QP (RB about) (DT a) (NN quarter))) (PP (IN of) (NP (DT an) (NN hour))))) (NP (DT the) (NN bell)) (VP (VBD rang))) (, ,) (CC and) (S (NP (NNP Tuppence)) (VP (VBD repaired) (PP (TO to) (NP (DT the) (NN hall))) (S (VP (TO to) (VP (VB show) (NP (DT the) (NN visitor)) (PRT (RP out))))))) (. .)))
After 15 minutes, nothing happened and Tuppence and the visitor decided that it was time to eat some lunch. 
( ( After ( 15 minutes ) ) ( , ( ( ( ( nothing happened ) and ) ( ( ( Tuppence and ) ( the visitor ) ) ( decided ( that ( it ( was ( time ( to ( eat ( some lunch ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN After) (NP (CD 15) (NNS minutes))) (, ,) (S (NP (NN nothing)) (VP (VBD happened))) (CC and) (S (NP (NP (NNP Tuppence)) (CC and) (NP (DT the) (NN visitor))) (VP (VBD decided) (SBAR (IN that) (S (NP (PRP it)) (VP (VBD was) (VP (NN time) (S (VP (TO to) (VP (VB eat) (NP (DT some) (NN lunch))))))))))) (. .)))