(Q1) In the second chapter of the document named "zoo.xml", find the figure(s) with caption "Tree Frogs".

document("zoo.xml")/chapter[2]//figure[caption = "Tree Frogs"]

• uses the "abbreviated syntax of XPath"; no ancestor, preceding, etc.
• borrows the document() function from XSLT
• result of a path expression is a deep copy of selected nodes