Text: Hypersaline brine and artificial seawater can be used with Champia parvula only if they are accompanied by at least 50% natural seawater.
Entailment: Artificial seawater and hypersaline brine can be used with Champia parvula, but only if they are accompanied by at least 50% natural seawater.
Contradiction: Champia parvula can not be used with hypersaline brine or artifical seawater, even if they are accompanied by 50% natural seawater.