sentence1_binary_parse: ( They ( inconsistently ( ( identify ( forces ( in ( nature ( -LRB- ( ( ( e.g. , ) ( gravity ( , ( magnetism ( , friction ) ) ) ) ) -RRB- ) ) ) ) ) ) . ) ) )
sentence1_parse: (ROOT (S (NP (PRP They)) (ADVP (RB inconsistently)) (VP (VBP identify) (NP (NP (NNS forces)) (PP (IN in) (NP (NP (NN nature)) (PRN (-LRB- -LRB-) (NP (NNP e.g.)) (, ,) (NP (NN gravity) (, ,) (NN magnetism) (, ,) (NN friction)) (-RRB- -RRB-)))))) (. .)))
sentence1: They inconsistently identify forces in nature (e.g., gravity, magnetism, friction).
sentence2_parse: (ROOT (S (NP (NNP Gravity) (CC and) (NNP magnetism)) (VP (VBP are) (NP (DT both) (JJ common) (NNS forces))) (. .)))
sentence2: Gravity and magnetism are both common forces.