examples/sbtab/simple_examples/4.tsv/QuantityMatrix.tsv
!!ObjTables schema='SBtab' type='Data' tableFormat='row' class='QuantityMatrix' name='QuantityMatrix' date='2020-07-18 12:17:45' objTablesVersion='1.0.5'
!ID !Sign !Identifiers:obo.chebi
Glucose 0 CHEBI:17234
Fructose 0 CHEBI:15824