{"version":"1.0","type":"rich","provider_name":"HearLore","provider_url":"https://hearlore.com","title":"John Metcalf (civil engineer)","html":"<iframe src=\"https://hearlore.com/embed/topic/john-metcalf-(civil-engineer)\" width=\"600\" height=\"240\" title=\"John Metcalf (civil engineer) on HearLore\" loading=\"lazy\" allow=\"autoplay\" style=\"border:0\"></iframe>","width":600,"height":240,"thumbnail_url":"https://hearlore.com/topic/john-metcalf-(civil-engineer)/opengraph-image","thumbnail_width":1200,"thumbnail_height":630,"cache_age":3600}