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从craigslist中使用YQL和公寓搜索位置，我得到了以下形式的结果。有什么办法可以从这里获得纬度，经度信息吗？或者我必须对地址进行地理编码？除Craigslist之外，还有其他的资源可以用来获取地理位置和地理位置吗？从craigslist经纬度
{
"about": "http://kolkata.craigslist.co.in/apa/2559284148.html",
"title": [
"Temporary Stay Rental (Kasba Area, Kolkata) 2bd 1100sqft",
"Temporary Stay Rental (Kasba Area, Kolkata) 2bd 1100sqft"
],
"link": "http://kolkata.craigslist.co.in/apa/2559284148.html",
"description": "FURNISHED apartment for executives, professionals, NRIs and visitors for temporary stay in Kolkata (Calcutta).<br>\n<br>\nLOCATION: Kasba area near Delhi Public School - close to Gariahat and EM Bypass<br>\n<br>\n2 bedrooms, 2 bathrooms, a spacious living room, a separate dining room and a modular kitchen. Cooking facility - cooking gas burner, utensils, refrigerator etc. <br>\n<br>\nApartment located at the second floor of a four story building. Elevator available.<br>\n<br>\nHot water, air conditioned bedrooms and one covered parking space available.<br>\n<br>\nRent is INR 2,000.00 (or USD 50.00) per day for a minimum stay of 15 days. Costs of electricity and cooking gas charged separately on actual usage.<br>\n<br>\nShorter stay possible at negotiable rates.<br>\n<br>\nAppropriate ID required for renting.<!-- START CLTAGS -->\n\n\n<br><br><ul class=\"blurbs\">\n<li> <!-- CLTAG GeographicArea=Kasba Area, Kolkata -->Location: Kasba Area, Kolkata\n<li>it's NOT ok to contact this poster with services or other commercial interests</ul>\n<!-- END CLTAGS -->",
"date": "2011-08-22T10:05:43+05:30",
"language": "en-us",
"rights": "Copyright © 2011 craigslist, inc.",
"source": "http://kolkata.craigslist.co.in/apa/2559284148.html",
"type": "text",
"issued": "2011-08-22T10:05:43+05:30"
}