S -> SN SV 		[1.0]
	SV -> VTrans SN		[0.4]
	SV -> VIntrans		[0.3]
	SV -> VSupl SN SN	[0.3]
	VTrans -> "bebió"	[1.0]
	VIntrans -> "murió"	[1.0]
	VSupl -> "regaló"	[1.0]
	SN -> "flores"		[0.6]
	SN -> "agua"		[0.4]