YOU SAID:
Siri sells seashells by the seashore
INTO JAPANESE
Siri が海岸で貝殻を売る
BACK INTO ENGLISH
Siri sells seashells on the beach
INTO JAPANESE
Siri がビーチで貝殻を売る
BACK INTO ENGLISH
Siri sells seashells on the beach
That didn't even make that much sense in English.