riso.belief_nets.BeliefNetwork monitor1
{
    riso.belief_nets.Variable status
    {
        type discrete { "functional" "broken" }
        distribution riso.distributions.Discrete
        {
            dimensions { 2 } probabilities { 0.95 0.05 }
        }
    }

    riso.belief_nets.Variable measurable
    {
        type continuous
        parents { status }
        distribution riso.distributions.IndexedDistribution
        {
            index-variables { status }
            components 
            {
                riso.distributions.Gaussian { mean 20 std-deviation 10 }
                riso.distributions.Gaussian { mean 50 std-deviation 30 }
            }
        }
    }
}