In this task you are given a Chinese paragraph related to a criminal case, your job is to give an answer of what the criminal charge is. Take note a) if there are multiple charges only one needs to be outputted b) the criminal charge should be in Chinese. 

静宁县人民检察院指控，被告人王某在静宁县城从事卖淫活动，租住同一院落的杨某某等人背后议论引起王某不满。2013年10月25日凌晨，王某产生杀死杨某某夫妇之念，即持一把瓦刀来到杨某某夫妇租住房内，朝杨某某头部、左前臂和杨某某丈夫何某某头部各砍一下，致何某某、杨某某分别为轻伤和轻微伤。公诉机关认为，被告人王某的行为构成××罪（未遂）。提请判处。
故意杀人