YOU SAID:

wouldn't know if someone was up him sideways with an armful of deck chairs

INTO JAPANESE

誰かがデッキチェアを一杯持って横向きになっていたかどうかわからない

BACK INTO ENGLISH

I don't know if someone was lying sideways with a full deckchair

INTO JAPANESE

誰かがフルデッキチェアで横になっていたかどうかはわかりません

BACK INTO ENGLISH

I don't know if anyone was lying in a full deck chair

INTO JAPANESE

フルデッキチェアに横になっている人がいるかどうかはわかりません

BACK INTO ENGLISH

I don't know if anyone is lying on a full deck chair

INTO JAPANESE

フルデッキチェアに横になっている人がいるかどうかはわかりません

BACK INTO ENGLISH

I don't know if anyone is lying on a full deck chair