extension relation counts:
 count |           name            |      base_cv_name       
-------+---------------------------+-------------------------
     9 | dependent_on              | biological_process
   174 | happens_during            | biological_process
   275 | has_input                 | biological_process
   270 | has_regulation_target     | biological_process
    12 | independent_of            | biological_process
     2 | in_presence_of            | biological_process
     1 | not_happens_during        | biological_process
    26 | occurs_at                 | biological_process
    13 | occurs_in                 | biological_process
    37 | coincident_with           | cellular_component
    29 | dependent_on              | cellular_component
   842 | exists_during             | cellular_component
    20 | independent_of            | cellular_component
    16 | not_exists_during         | cellular_component
     4 | part_of                   | cellular_component
    12 | assayed_enzyme            | fission_yeast_phenotype
  6561 | assayed_using             | fission_yeast_phenotype
  4494 | has_expressivity          | fission_yeast_phenotype
  6071 | has_penetrance            | fission_yeast_phenotype
    28 | is_bearer_of              | fission_yeast_phenotype
    24 | occurs_in                 | fission_yeast_phenotype
 35993 | during                    | gene_ex
     4 | in_absence_of             | gene_ex
   641 | in_presence_of            | gene_ex
    29 | occurs_in                 | gene_ex
     1 | requires_sequence_feature | gene_ex
    64 | activated_by              | molecular_function
     8 | dependent_on              | molecular_function
   141 | happens_during            | molecular_function
   404 | has_direct_input          | molecular_function
   171 | has_regulation_target     | molecular_function
    23 | independent_of            | molecular_function
    61 | inhibited_by              | molecular_function
     9 | in_presence_of            | molecular_function
     2 | not_happens_during        | molecular_function
   124 | occurs_at                 | molecular_function
     9 | occurs_in                 | molecular_function
     9 | part_of                   | molecular_function
     1 | during                    | name_description
     9 | absent_during             | PSI-MOD
   137 | added_by                  | PSI-MOD
    97 | added_during              | PSI-MOD
     8 | coincident_with           | PSI-MOD
     4 | has_direct_input          | PSI-MOD
     2 | in_presence_of            | PSI-MOD
   334 | level_fluctuates_during   | PSI-MOD
  6779 | present_during            | PSI-MOD
    20 | removed_by                | PSI-MOD
    17 | removed_during            | PSI-MOD
     1 | required_for              | PSI-MOD
(50 rows)


number of annotations using extensions by cv:
 count |      base_cv_name       
-------+-------------------------
     1 | name_description
   701 | biological_process
   857 | molecular_function
   903 | cellular_component
  7344 | PSI-MOD
 15504 | fission_yeast_phenotype
 36612 | gene_ex
(7 rows)