sentences:  Portugal opted out of the 1970 contest, one of the many countries to withdraw after the chaotic 1969 result where four songs tied for first place.The entry, however, had been selected at the time the withdrawal was made, so the country would have been represented by Sérgio Borges with "Onde vais rio que eu canto".Following the return to the traditional set-up in 1970, Portugal returned to the contest.