Basically I'm going through the が ある / が いる grammar - is it okay to say (person) に (object) が ある/いる?, e.g. Michiko-san に お金 が あります (Michio san has money)
I guess I'm using it like you might say (Location) に (object) が ある e.g. "there is a lamp in that house" - does (person) need a different particle in the example I gave above?