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## **Reconstructing objects**  Many segmented objects are suitable for domain-specific interpretation. For example:  1. **Chemical structures** are lines and characters, with occasional circles; we often approach 100% Recall/Precision recall/precision  for vector or good pixel diagrams. We have successfully converted thousands of molecules, with annotations, and also chemical reactions into Chemical Markup Language. (figure Language (e.g. figure  1a). 2. **Phylogenetic trees** are often tractable, consisting of a single connected trees with labels close to the tip. We can process both rooted (orthogonal and circular, e.g.  figure 1b) and unrooted trees. For simple diagrams precision is often 100%. 3. **X-y plots**. These are often very tractable (figure (e.g. figure  1c) - again with high precision; they contain:   * X- and/or Y- axes each consisting of lines with tick marks, scales, quantities and units  * symbols or points, perhaps with error bars and legands for each type