PPLRE Corpus 491.a.2

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Notes

• It is a long sentence.
• There are many relations (four OP() relations and five PL() relations)
  • OP(ORGANISM,PROTEINa)
  • OP(ORGANISM,PROTEINb)
  • OP(ORGANISM,PROTEINc)
  • OP(ORGANISM,PROTEINd)
  • PL(PROTEINa,LOCATIONa)
  • PL(PROTEINa,LOCATIONb)
  • PL(PROTEINb,LOCATIONa)
  • PL(PROTEINc,LOCATIONa)
  • PL(PROTEINd,LOCATIONa)
• Not all permutations of the PL() relation are valid: 11 are invalid.
• The problem may be simplified by inducing a model that groups entities. E.g. "ExbB and ExbD, as well as the NADH oxidase.” into a single group.
• See: PPLRE Research Topics - Multi-relationed Sentences
• Link to paper: http://www.blackwell-synergy.com/doi/pdf/10.1046/j.1365-2958.1997.3331703.x
• Link to PubMed: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9159515&dopt=Citation

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NER

• <PSID=491.a.2> "In this study, [ORGANISM Escherichia coli] [PROTEIN TonB] was found to be distributed in sucrose density gradients approximately equally between the [LOCATIONa cytoplasmic membrane] and the [LOCATIONb outer membrane] fractions, while two proteins with which it is known to interact, [PROTEINb ExbB] and [PROTEINc ExbD], as well as the [PROTEINd NADH] oxidase activity characteristic of the [LOCATION cytoplasmic membrane], were localized in the [LOCATION cytoplasmic membrane] fraction."

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