anchor.diff:  q5,nat_lang,concentration of dissolved carbon dioxide\, carbonate or bicarbonate in the water of an aquatic system
   q5,metacat_ui,carbon dioxide, carbonate or bicarbonate concentration
   q5,full_text,attribute:concentration AND (attribute:"*carbonate" or attribute:"C02" or attribute:"carbon dioxide") AND (abstract:aquatic OR title:aquatic)
  -q5,bioportal_annot,sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000___ AND (sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000323 OR sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000325 OR sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000326) AND (sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000326 OR sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000325)
  -q5,esor_annot,sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000___ AND (sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000323 OR sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000325 OR sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000326) AND (sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000326 OR sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000325)
  +q5,bioportal_annot,sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000512 AND (sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000323 OR sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000325 OR sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000326) AND (sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000326 OR sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000325) AND sem_annotation_bioportal_sm:http://purl.odolibrary.org/odo/ENVO_00002030
  +q5,esor_annot,sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000512 AND (sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000323 OR sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000325 OR sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000326) AND (sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000326 OR sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000325) AND sem_annotation_esor_sm:http://purl.odolibrary.org/odo/ENVO_00002030
   
   
   q6,nat_lang,ecosystem carbon flux in dimensions of (amount or mass) of (carbon dioxide or carbon) per area per time
  
positive.code: q3,nat_lang,soil carbon content in dimensions of (amount or mass) of carbon per (volume of soil or area of surface) 
  q3,metacat_ui,*gram* carbon soil
  q3,full_text,(attribute:carbon AND attribute:*gram*) AND (abstract:soil OR title: soil)
  q3,bioportal_annot,sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000329 AND sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000___ AND sem_annotation_bioportal_sm:http://purl.odolibrary.org/odo/ENVO_00001998
  q3,esor_annot,sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000329 AND sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000___ AND sem_annotation_esor_sm:http://purl.odolibrary.org/odo/ENVO_00001998
  
  
  q4,nat_lang,phytoplankton productivity as carbon increase in dimensions of (amount or mass) of carbon per (area or volume) per time
  
negative.code: q7,nat_lang,carbon dioxide uptake in an enrichment experiment in dimensions of (amount or mass) of carbon per (area or volume) per time
  q7,metacat_ui,("C02 uptake" OR "carbon dioxide uptake") AND "enrichment experiment" 
  q7,full_text,(attribute:"C02 uptake" or attribute:"carbon dioxide uptake") AND "enrichment experiment"
  q7,bioportal_annot,sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000011 AND sem_annotation_bioportal_sm:http://purl.dataone.org/odo/ECSO_00000506
  q7,esor_annot,sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000011 AND sem_annotation_esor_sm:http://purl.dataone.org/odo/ECSO_00000506
  
  
  q8,nat_lang,growth of trees measured as changes in (diameter\, height or curcumference or mass) (with or without) duration
  