anchor.diff:  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,-9999
  +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)
  
positive.code: q8_1,metacat_ui,tree growth
  q8_1,full_text,((attribute:diameter OR attribute:height OR attribute:circumference) AND attribute:date) AND (abstract:tree OR title:tree)
  q8_1,bioportal_annot,sem_annotation_bioportal_sm:http://purl.dataone.org/obo/ECSO_00000501 AND (sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/PATO_0001334  OR sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/PATO_0000119  OR sem_annotation_bioportal_sm:http://purl.obolibrary.org/obo/PATO_0001648  )
  q8_1,esor_annot,sem_annotation_esor_sm:http://purl.dataone.org/obo/ECSO_00000501 AND (sem_annotation_esor_sm:http://purl.obolibrary.org/obo/PATO_0001334  OR sem_annotation_esor_sm:http://purl.obolibrary.org/obo/PATO_0000119  OR sem_esor_bioportal_sm:http://purl.obolibrary.org/obo/PATO_0001648  )
  q9_1,nat_lang,net primary production of coastal macroalgae in dimensions of (amount or mass) of carbon per area per time
  q9_1,metacat_ui,net primary production coastal macroalgae 
  q9_1,full_text,attribute:"net primary production" AND (abstract:coastal macroalgae OR title:coastal macroalgae)
  
negative.code: 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_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"
  