YOU SAID:

I am riding a Black horse after eating my dinner

INTO JAPANESE

夕食を食べた後、黒い馬に乗っています

BACK INTO ENGLISH

Riding a black horse after having dinner

INTO JAPANESE

夕食後、黒い馬に乗る

BACK INTO ENGLISH

Ride a black horse after dinner

INTO JAPANESE

夕食後に黒い馬に乗る

BACK INTO ENGLISH

Ride a black horse after dinner