I want to extract the citation context of PubMed Central papers, given the following data structure (Journal Article Tag Suite, JATS): <p> This is a sentence. This is a citing sentence [<xref ref-type="bibr" rid="CR1">1</xref>]. This is another sentence </p> A real example file: https://www.dropbox.com/s/u4g1sisil33wnhu/PMC1914234.xml?dl=0 I want to extract "This is a citing sentence" as the context of reference with rid CR1, and do not extract the previous and the following sentences. I am able to locate the paragraph that contains the xref tag, but I don't know how to extract the correct sentence only. The XPath command string() or text() of this paragraph only return texts without structural information (e.g. tag) so I have difficulties in locating the exact sentence. Is there a solution to solve this problem? EDIT: I think I need an XPath command that can extract texts with structural information, instead of using string() and text() on its parent element. Continue reading...
