How to merge two data sources with rxJava.

Merging two data sources with rxJava

 restObservable =  giphyService.searchGiphy(getGiphyQueryMap("dog")).flatMap(new Func1<GiphySearch, Observable<GiphyGif>>() {
            @Override
            public Observable<GiphyGif> call(GiphySearch giphySearch) {
                return Observable.from(giphySearch.data);
            }
        }).zipWith(namesService.getPeople().flatMap(new Func1<List<People>, Observable<Person>>() {
            @Override
            public Observable<Person> call(List<People> people) {
                return Observable.from(people);
            }
        }), new Func2<GiphyGif, Person, GifAndData>() {
            @Override
            public GifAndData call(GiphyGif giphyGif, Person person) {
                return new GifAndData(giphyGif.url, person.name);
            }
        }).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread());