_exmpl1_bandgap<2.0 OR _exmpl2_bandgap<2.5
NOT ( chemical_formula_hill = "Al" AND chemical_formula_anonymous = "A" OR chemical_formula_anonymous = "H2O" AND NOT chemical_formula_hill = "Ti" )
nelements > 3
chemical_formula_hill = "H2O" AND chemical_formula_anonymous != "AB"
_exmpl_aax <= +.1e8 OR nelements >= 10 AND NOT ( _exmpl_x != "Some string" OR NOT _exmpl_a = 7)
_exmpl_spacegroup="P2"
_exmpl_cell_volume<100.0
_exmpl_bandgap > 5.0 AND _exmpl_molecular_weight < 350
_exmpl_melting_point<300 AND nelements=4 AND elements="Si,O2"
_exmpl_some_string_property = 42
5 < _exmpl_a
identifier CONTAINS x
identifier STARTS WITH x
identifier ENDS WITH x
chemical_formula_anonymous CONTAINS "C2" AND chemical_formula_anonymous STARTS WITH "A2"
chemical_formula_anonymous STARTS "B2" AND chemical_formula_anonymous ENDS WITH "D2"
list HAS value
list HAS ALL values
list HAS ANY values
list LENGTH value
NOT list HAS inverse
calculations.id HAS "calc-id-96"
authors.lastname HAS "Schmit"
identifier IS UNKNOWN
NOT identifier IS KNOWN
chemical_formula_hill IS KNOWN AND NOT chemical_formula_anonymous IS UNKNOWN
NOT a > b OR c = 100 AND f = "C2 H6"
(NOT (a > b)) OR ( (c = 100) AND (f = "C2 H6") )
a >= 0 AND NOT b < c OR c = 0
((a >= 0) AND (NOT (b < c))) OR (c = 0)
elements HAS ALL "Si", "Al", "O"
elements HAS ALL "Si", "Al", "O" AND elements LENGTH 3
nelements=4
nelements>=2 AND nelements<=7
chemical_formula_descriptive="(H2O)2 Na"
chemical_formula_descriptive CONTAINS "H2O"
chemical_formula_reduced="H2NaO"
chemical_formula_hill="H2O2"
chemical_formula_anonymous="A2B"
nsites=4
nsites>=2 AND nsites<=7
