2007年4月20日至2009年4月20日期间,被告郭某将陈巴尔虎旗某小区的一个房屋租赁给被告王某使用,双方在租赁合同中约定“租赁期间该房屋发生的取暖费由王某负责承担”。被告王某未如约向原告某热力公司缴纳热力费,原告陈巴尔虎旗某热力公司将王某、郭某一同诉至法院,要求被告王某给付承租期间的供热费8700多元及滞纳金4000多元,并 April 20, 2007 to April 20, 2009 period, the defendant Kwak will Chen Baer tiger flag a plot of a residential leased to the defendant Wang use, the two sides agreed in the lease contract “during the rental of the housing heating Wang charge is responsible for ”. Wang defendant did not turn around to pay a thermal fee to the plaintiff a thermal company, the plaintiff Chen Baer tiger flag a heat company will be Wang, Kwak a suit with the court, requiring the defendant Wang to pay the rent during the heating costs 8700 yuan and late payment of more than 4,000 yuan ,and