Complex sentence: The English name "Octopus card" was also selected from the naming competition, and coincides with the number eight in the Cantonese name, since an octopus has eight tentacles.
Split into simpler sentences: The English name "Octopus card" was also selected from the naming competition. Coincidentally, the English name coincides with the number eight in the Chinese name, since an octopus has eight tentacles.