the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause | (sports) someone in charge of training an athlete or a team |
an active and efficient cause; capable of producing a certain effect | one who trains or exhibits animals |
a businessman who buys or sells for another in exchange for a commission | an agent who handles something or someone |
a representative who acts on behalf of other persons or organizations | |
any agent or representative of a federal agency or bureau | |
a substance that exerts some force or effect | |