YOU SAID:

I was sitting at the park and I saw a burly man

INTO JAPANESE

私は公園に座っていました、そして私は屈強な男を見ました

BACK INTO ENGLISH

I was sitting in the park and I saw a burly man

INTO JAPANESE

私は公園に座っていた、そして私は屈強な男を見た

BACK INTO ENGLISH

I was sitting in the park and I saw a strong man

INTO JAPANESE

私は公園に座っていました、そして私は強い男を見ました

BACK INTO ENGLISH

I was sitting in the park and I saw a strong man