extension relation counts:
 count |           name            
-------+---------------------------
     3 | absent_during
    31 | activated_by
    39 | added_by
    34 | added_during
  1526 | assayed_using
    25 | dependent_on
   140 | during
   241 | exists_during
   267 | happens_during
   267 | has_direct_input
   207 | has_expressivity
   186 | has_input
   215 | has_penetrance
   356 | has_regulation_target
     2 | in_absence_of
    39 | independent_of
    58 | inhibited_by
    51 | in_presence_of
  4634 | is_a
     7 | is_bearer_of
     2 | level_fluctuates_during
    18 | localization_dependent_on
     1 | modified_by
     6 | not_during
     3 | not_exists_during
     4 | not_happens_during
     1 | not_occurs_at
    86 | occurs_at
    52 | occurs_in
     4 | part_of
    18 | present_during
     8 | removed_by
     7 | removed_during
     3 | required_for
     2 | requires_direct_regulator
     1 | requires_localization
     8 | requires_modification
     4 | requires_regulator
    24 | requires_sequence_feature
     9 | requires_substance
(40 rows)


number of annotations using extensions by cv:
 count |      base_cv_name       
-------+-------------------------
     1 | name_description
   518 | cellular_component
   694 | molecular_function
   784 | biological_process
  1531 | PSI-MOD
 10482 | fission_yeast_phenotype
 40276 | gene_ex
(7 rows)