def evalDeleteWhere(ctx, u):

    res = evalBGP(ctx, u.triples)
    for g in u.quads:
        cg = ctx.dataset.get_context(g)
        c = ctx.pushGraph(cg)
        res = _join(res, list(evalBGP(c, u.quads[g])))

    for c in res:
        g = ctx.graph
        g -= _fillTemplate(u.triples, c)

        for g in u.quads:
            cg = ctx.dataset.get_context(c.get(g))
            cg -= _fillTemplate(u.quads[g], c)
Returns a timestamp (seconds since the epoch).
dataset/ETHPy150Open RDFLib/rdflib/rdflib/plugins/sparql/update.py/evalDeleteWhere--crossover with--dataset/ETHPy150Open KoffeinFlummi/Chronyk/chronyk/chronyk.py/Chronyk.timestamp