YOU SAID:
today i ran to the park and saw a large group of people
INTO JAPANESE
今日私は公園に走って行き、大勢の人が集まっているのを見ました
BACK INTO ENGLISH
I ran to the park today and saw a crowd of people
INTO JAPANESE
今日公園に走って行ったら人だかりが見えた
BACK INTO ENGLISH
When I ran to the park today, I saw a crowd.
INTO JAPANESE
今日公園に走って行ったら、人だかりが見えました。
BACK INTO ENGLISH
When I ran to the park today, I saw a crowd.
That didn't even make that much sense in English.