1.joni dan bima rajin (+) (-) (?) 2.jack doesn't wacth tv (-) (?) yes,... no,....

yes, joni and bima are intelligent
no, joni and bima are not intelligent
are joni and bima intelligent?

no, jack does watch the tv
does jack watch the tv?

+ joni and bima are dilligent
- joni and bima aren't dilligent
? are joni and bima dilligent?
yes, they are. no they aren't.

+jack watch tv
-jack doesn't watch tv
?does jack watch tv?
yes, he does. no he doesn't.

is that clear?