anchor.diff:  q3_1,esor_annot,-9999
   q4_1,nat_lang,phytoplankton productivity as carbon increase in dimensions of (amount or mass) of carbon per (area or volume) per time
   q4_1,metacat_ui,phytoplankton productivity
  -q4_1,full_text,(attribute:"productivity" AND ( attribute:milligramPerMeterSquaredPerDay OR attribute:milligramPerMeterCubedPerDay) AND (abstract:phytoplankton OR title:phytoplankton)
  +q4_1,full_text,(attribute:"productivity" AND (attribute:milligramPerMeterSquaredPerDay OR attribute:milligramPerMeterCubedPerDay) AND (abstract:phytoplankton OR title:phytoplankton)
   q4_1,bioportal_annot,sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000336 AND sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000021
   q4_1,esor_annot,sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000336 AND sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000021
   q4_2,nat_lang,phytoplankton productivity, any dimensions or method
  
positive.code: q4_2,esor_annot,-9999
  q5_1,nat_lang,concentrations of carbonate and bicarbonate ions in aquatic systems
  q5_1,metacat_ui,carbonate and bicarbonate concentration
  q5_1,full_text,(attribute:"*carbonate" or attribute:"C02" or attribute:"carbon dioxide") AND (abstract:ocean OR title:ocean) AND co2calc
  q5_1,bioportal_annot,sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/PATO_0000033 AND (sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000326 OR sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000325)
  q5_1,esor_annot,sem_annotation_esor_sm:http://purl.obolibrary.org/obo/PATO_0000033 AND (sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000326 OR sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000325)
  q6_1,nat_lang,ecosystem carbon flux in dimensions of (amount or mass) of (carbon dioxide or carbon) per area per time
  q6_1,metacat_ui,carbon dioxide "flux tower"
  q6_1,full_text,(attribute:"C02 flux" or attribute:"carbon dioxide flux") AND (abstract:flux tower OR title:flux tower)
  q6_1,bioportal_annot,-9999
  q6_1,esor_annot,-9999
  q7_1,nat_lang,carbon dioxide uptake in an enrichment experiment in  a grassland in dimensions of (amount or mass) of carbon per (area or volume) per time
  
negative.code: query_id,query_type,query_string
  q1_1,nat_lang,above ground net primary production in a grassland in dimensions of biomass of plant material (with or without) (area or time)
  q1_1,metacat_ui,grassland above ground net primary production
  q1_1,full_text,attribute:"net primary production" AND (abstract:"above ground" OR title:"above ground")
  q1_1,bioportal_annot,-9999
  q1_1,esor_annot,-9999
  q2_1,nat_lang,heterotrophic soil respiration as carbon increase in dimensions of (amount or mass) of carbon per (area or volume) per time
  q2_1,metacat_ui,heterotrophic soil respiration
  q2_1,full_text,attribute:"soil respiration" AND (abstract:heterotrophic OR title:heterotrophic) AND (abstract:soil OR title:soil)
  q2_1,bioportal_annot,-9999
  q2_1,esor_annot,-9999
  q3_1,nat_lang,soil carbon soil content in dimensions of (amount or mass) of carbon per (volume of soil or area of surface) 
  