A flowering of (grass trees) may be stimulated by heat of (brush fires).
Exports of a country may be stimulated by devaluating a currency.
Glucagon may raise a level by stimulatting a breakdown of glycogens.
A (disease antigen) may stimulate production of an antibody.
Exchange of skills may be stimulated by a flow of scientists.
Public spending may be increased with an aim of stimulatting spending.