(S (S (NP (BASENP (DT A) (NN family)) (PP (IN of) (BASENP (NN four)))) (VP (VBD were) (VP (VBN said) (S (S (VP (TO to) (VP (VB have) (VP (VBN been) (VP (VP (VP (VBG watching) (BASENP (NN television))) (ADVP (RB together))) (PP (IN in) (BASENP (DT the) (NN lounge)))))))) (SBAR (WHADVP (WRB when)) (S (NP (NP (BASENP (DT a) (JJ large) (NN lump)) (PP (IN of) (BASENP (NN rock)))) (PRN (COMMA ,) (BASENP (QP (RB about) (NN 50)) (NNS tons)) (COMMA ,))) (VP (VP (VBZ broke) (PRT (RP off))) (PP (IN from) (NP (BASENP (DT a) (ADJP (NN 50) (NN foot)) (NN cliff)) (PP (IN above) (BASENP (DT the) (NN house)))))))))))) (PERIOD .))