// Bayesian network 
network "InternalNetwork" { //2 variables and 2 probability distributions
}
variable  "Infected?" { //2 values
	type discrete[2] {  "true"  "false" };
	property "position = (153, 103)" ;
}
variable  "Positive?" { //2 values
	type discrete[2] {  "true"  "false" };
	property "observed true" ;
	property "position = (154, 238)" ;
}
probability (  "Infected?" ) { //1 variable(s) and 2 values
	table 
		0.0015	// p(true | evidence )
		0.99850000000000005; 	// p(false | evidence );
}
probability (  "Positive?"  "Infected?" ) { //2 variable(s) and 4 values
	table 
		 1.0 0.002 0.0 0.998;
}