riso.belief_nets.BeliefNetwork alt-group
{
	riso.belief_nets.Variable A1
	{
		distribution riso.distributions.Gaussian { mean 50  std-deviation 7 }
	}

	riso.belief_nets.Variable A2
	{
		distribution riso.distributions.Gaussian { mean 110  std-deviation 20 }
	}

	riso.belief_nets.Variable A3
	{
		distribution riso.distributions.Gamma { alpha 8  beta 2 }
	}

	riso.belief_nets.Variable B1
	{
		distribution riso.distributions.Lognormal { mu 2  sigma 1.2 }
	}

	riso.belief_nets.Variable B2
	{
		distribution riso.distributions.Gaussian { mean 32  std-deviation 5 }
	}

	riso.belief_nets.Variable B3
	{
		distribution riso.distributions.Truncated 11 100
			riso.distributions.Gaussian { mean 14  std-deviation 17 }
	}

	riso.belief_nets.Variable sum-A
	{
		parents { A1 A2 A3 }
		distribution riso.distributions.Sum { }
	}

	riso.belief_nets.Variable sum-B
	{
		parents { B1 B2 B3 }
		distribution riso.distributions.Sum { }
	}

	riso.belief_nets.Variable sum-1
	{
		parents { A1 B1 }
		distribution riso.distributions.Sum { }
	}

	riso.belief_nets.Variable sum-2
	{
		parents { A2 B2 }
		distribution riso.distributions.Sum { }
	}

	riso.belief_nets.Variable sum-3
	{
		parents { A3 B3 }
		distribution riso.distributions.Sum { }
	}

	riso.belief_nets.Variable total-AB
	{
		parents { sum-A sum-B }
		distribution riso.distributions.Sum { }
	}

	riso.belief_nets.Variable total-123
	{
		parents { sum-1 sum-2 sum-3 }
		distribution riso.distributions.Sum { }
	}
}