Create an outline of sections and subsections for a webpage on a site about Investing, targeting the keyword "how to choose a robo-advisor". The target region is Canada. For each section, include the heading with its HTML tag (h1, h2, h3 or h4). Include at least h1, h2 and h3 headings. Output a JSON dictionary with the HTML heading tags as keys and the heading text as values. Return only the dictionary, without any accompanying or instroductory text.