Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     Well , no one could survive without water , but you see pollution has been making more and more water unable for drinking .  
 Person2:  Yeah . Water pollution has for a long time been a major concern among the environmental issues .  
 Person1:      But what are the sources of water pollution ?  
 Person2:  They could generally be divided into two categories , direct and indirect contaminant sources .  
 Person1:      Well , direct ones are the pollution directly from factories , refineries waste treatment plants etc . , aren ’ t they ?  
 Person2:  Yeah . They are emitted directly into urban water supplies .  
 Person1:      But what about the indirect ones ?  
 Person2:  Indirect sources include contaminants that enter the water supply from soils or groundwater systems and from the atmosphere via rainwater .  
 Person1:      I see . For the sake of us all , we should be an active participator in the prevention of it .  
 Person2:  Sure . It's an issue asking for everyone's participation . 

0