anchor.diff:  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,sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/CHEBI_16526 AND em_annotation_bioportal_sm:sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000200  AND em_annotation_bioportal_sm:sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000309
  -q6_1,esor_annot,sem_annotation_esor_sm:http://purl.obolibrary.org/obo/CHEBI_16526 AND em_annotation_esor_sm:sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000200  AND em_annotation_esor_sm:sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000309
  +q6_1,bioportal_annot,sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/CHEBI_16526 AND em_annotation_bioportal_sm:sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000104  AND em_annotation_bioportal_sm:sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000309
  +q6_1,esor_annot,sem_annotation_esor_sm:http://purl.obolibrary.org/obo/CHEBI_16526 AND em_annotation_esor_sm:sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000014  AND em_annotation_esor_sm:sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000309
   q7_1,nat_lang,carbon dioxide uptake in an enrichment experiment in dimensions of (amount or mass) of carbon per (area or volume) per time
   q7_1,metacat_ui,("C02 uptake" OR "carbon dioxide uptake") AND "enrichment experiment" 
   q7_1,full_text,(attribute:"C02 uptake" or attribute:"carbon dioxide uptake") AND "enrichment experiment"
  
positive.code: 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 dioxide flux in dimensions of (amount or mass) per (area or volume) per time
  q2_1,metacat_ui,heterotrophic soil respiration
  q2_1,full_text,(attribute:"soil respiration" AND (attribute:"carbon dioxide" OR attribute:CO2) AND (attribute:time)) AND (abstract:heterotrophic OR title:heterotrophic) AND (abstract:soil OR title:soil)
  
negative.code: q3_1,metacat_ui,*gram* carbon soil
  q3_1,full_text,(attribute:carbon AND attribute:*gram*) AND (abstract:soil OR title: soil)
  q3_1,bioportal_annot,sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/CHEBI_27594 AND sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/PATO_0000033 AND sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/ENVO_00001998
  q3_1,esor_annot,sem_annotation_esor_sm:http://purl.obolibrary.org/obo/CHEBI_27594 AND sem_annotation_esor_sm:http://purl.obolibrary.org/obo/PATO_0000033 AND sem_annotation_esor_sm:http://purl.obolibrary.org/obo/ENVO_00001998
  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)
  