optionA_Title = "A. Yes"; optionB_Title = "B. Maybe later"; optionC_Title = "C. How can I charge the surfaces?"; optionD_Title = "D. I have charged a surface but it needs the opposite kind of charge. How can I do that?. "; optionE_Title = "E. I have charged a surface with the suitable kind of charge but it needs a different amount of charge. How can I achieve this?"; optionF_Title = "F. Thanks, see you later"; introFirst="Hi, my name is Franklyn, how is it going with the task? would you like some assistance? "; introRest="Welcome back, can I help you"; optionA_Text ="How can I help?"; optionB_Text ="Ok. Any time!"; optionC_Text ="First electrify by friction a couple of the materials on the counters and touch the red surface with one of them (the one with the suitable kind of charge). The surface will be electrified by simple contact."; optionD_Text ="In order to electrify the surface with negative charge you need to choose from the couple of objects you have rubbed the one that has more affinity for electrons and has been charged negatively. In order to electrify with positive charge you need to choose the one that has less affinity for electrons and has been charged positively. "; optionE_Text ="In order to electrify the surface with the prescribed amount of charge you need to take into account that charges of the same kind repel each other. Thus after every electrification the amount of charge transferred is such as it is required to balance between the two objects in contact (which means that the total charge is spread evenly). Try rubbing several couples of objects until you find an object with the double amount of charge from that prescribed. "; optionF_Text ="You are wellcome. Go for it! ";