{appName, select,
        feed {{parentType, select,
            0 {added a video}
            other {{isShared, select,
                1 {<profile>profile</profile>}
                other {added a video in <profile>profile</profile>'s timeline}
            }}
        }}
        other {{isShared, select,
            0 {added a video}
            other {{parentType, select,
                0 {added a video}
                other {<profile>profile</profile>}
            }}
        }}
    }