gnuplot: Построение координат X, Y и их меток

I have the following file (test.dat):

A   149 127
B   19  157
C   49  127
D   149 147
E   9   127
F   49  12
G   129 127

I would like gnuplot to plot these points with their label (a dot a position (149, 127), another dot at (19, 157), etc.). How can I do this?

Thanks!