A single sentence response (if possible) using から

If you want to give an explanation could something like this work

The question: なぜ 日本語の映画を見ませんでしたか。？ Why didn't you watch the Japanese movie?

The answer: 日本語がを分かりませんからです。(better: 日本語が分からないからです。) I think this would mean, "because I don't understand Japanese"　

I think this is the right way because I don't think something like 日本語を分かりませんから。will work.
Am i right wrong completely lost please let me know:)

*The basic form to express the reazon is 〜(だ)からです.

Ex.) それがおもしろいからです。(because it's funny.) / それが好きだからです。(because I like it.) 

Good practice! Please keep up. I hope this was helpful.