(S (S (S (BASENP (DT A) (JJ 10-year-old) (NN girl)) (VP (VBD was) (VP (ADVP (RB critically)) (VBN injured)))) (SBAR (IN after) (S (BASENP (DT a) (NN tree)) (VP (VBD fell) (PP (IN on) (NP (BASENP (DT the) (NN tent)) (SBAR (S (BASENP (PRP she)) (VP (VBD was) (VP (VBG sleeping) (PRT (RP in)))))))))))) (PERIOD .))