YOU SAID:
the bear does not eat pineapple on his pizza
INTO JAPANESE
熊は彼のピザにパイナップルを食べていない
BACK INTO ENGLISH
Bear does not eat pineapple for his pizza
INTO JAPANESE
クマは彼のピザのためにパイナップルを食べていない
BACK INTO ENGLISH
The bear does not eat pineapple for his pizza
INTO JAPANESE
熊は彼のピザのためにパイナップルを食べない
BACK INTO ENGLISH
Bear does not eat pineapple for his pizza
INTO JAPANESE
クマは彼のピザのためにパイナップルを食べていない
BACK INTO ENGLISH
The bear does not eat pineapple for his pizza
INTO JAPANESE
熊は彼のピザのためにパイナップルを食べない
it is unlikely that this phrase will ever reach equilibrium