anchor: Since time immemorial, the volcanic soil has produced a profusion of tomatoes, olives, walnuts, grapes, oranges, lemons, and figs.
positive: Tomatoes, olives, walnuts, grapes, oranges, lemons, and figs has been produced by volcanic soil for many years.
negative: Tomatoes, olives, walnuts, grapes, oranges, lemons, and figs can not grow in the volcanic soil.