parsing into structs with boolean or enum members with boost spirit x3

If I have a struct:

struct person{
    bool is_male;
    std::string name;
    std::vector<std::string> friends;
}

or

enum class gender_t{male, female}
struct person{
        gender_t gender;
        std::string name;
        std::vector<std::string> friends;
}

how can I parse into this struct using boost.spirit X3? how would a rule look like to parse a string like "alice male bob" and the parser returning a object with name alice, which is male and has one friend bob. How would it look like if the gender is only explicit said if the person isnt female?