Result: mark empty
tree_node_nts"S"nilnon_emptynilbotprop_nilbotbot
tree_node_nts"NP"cons"SBJ"nilnon_emptynilbotprop_nilbotbot
tree_node_term"NNP"nilnon_emptyword"Ms.""ms-PERIOD-""ms-PERIOD-""NNP""NNP""NNP"0prop_nilbotbot
tree_node_term"NNP"nilnon_emptyword"Haag""haag""haag""NNP""NNP""NNP"1prop_nilbotbot
tree_node_nts"VP"nilnon_emptynilbotprop_nilbotbot
tree_node_term"VBZ"nilnon_emptyword"plays""plays""play""VBZ""VBZ""VB"2prop_nilbotbot
tree_node_nts"NP"nilnon_emptynilbotprop_nilbotbot
tree_node_term"NNP"nilnon_emptyword"Elianti""elianti""elianti""NNP""NNP""NNP"3prop_nilbotbot