Following is some information about a water heater. From the information identify water heater subtype among: gas, electric, other.

{
	"domain": "residential_heating_cooling",
	"features": {
		"Independence PVPower vented, offers the option of installation without the need of a chimney. A draft-inducing fan pulls hot gases through the heat exchanger for optimum efficiency.": "",
		"IndependenceChimney vented, equipped with fuel saving vent damper and low profile rear drafthood which accommodates low overhead areas and permits flexibility of installation with existing heating system piping.": "",
		"Features:": "",
		"Other Features": "",
		"                    KIN7LNI-LE2 Independence 130,000 BTU Knockdown Steam Boiler NG (Trim Sold Separately)                    Available at Appliances Connection.": ""
	},
	"equipment": "conventional_water_heater",
	"images": [
		"https://static.appliancesconnection.com/product/450x420/26573898639b0ef279892cc90ce7164b/KIN7LNILE2.jpg",
		"https://static.appliancesconnection.com/product/450x420/26573898639b0ef279892cc90ce7164b/KIN7LNILE2.jpg",
		"https://static.appliancesconnection.com/product/450x420/26573898639b0ef279892cc90ce7164b/KIN7LNILE2.jpg",
		"https://static.appliancesconnection.com/product/75x75/26573898639b0ef279892cc90ce7164b/KIN7LNILE2.jpg"
	],
	"model": "KIN7LNILE2",
	"availability": "global",
	"manufacturer": "NAME_1"
}