why does this intransitive verb use が?


For full context:
<http://www3.nhk.or.jp/news/easy/k10011229751000/k10011229751000.html>

The sentence in question: この中には、人と同じように手が動いて、物を持つことができるロボットがあります。

My attempt at translation: "Out of these, there are roboters which can hold
things and

Variant A: ...there are hands which can move like human (hands)." Variant B:
...move their hands the same like humans."

I think that Variant B is more likely to be correct than variant A. Variant A
makes 人と同じように like a simple attribute to て, which is too far off from the
adverbial character this 人と同じように has judging by it's grammatical elements.

However, the problem with Variant B is that I translate "動いて" in a transitive
fashion, while 動く is clearly listed as intransitive on jisho
<http://jisho.org/search/%E3%81%86%E3%81%94%E3%81%8F> also, が instead of を
suggests an intransitive meaning. If it was a potential verb then I wouldn't
mind implying a "transitive" meaning combined with "can (do)", but 動く doesn't
have any potential properties by default, does it? I also tried to search for
an answer here <http://www.guidetojapanese.org/learn/grammar/in-transitive>
but it wasn't really helpful for this particular case.

EDIT: I think I got a bit closer to resolving the question on my own. I
completely overlooked that 動いて is of course also directly connected to ことができる.
In this case, 手が動く would fit perfectly well. The only thing which still makes
me a bit skeptical is that 動く is intransitive by default. It probably
perfectly normal for japanese, but since I usually only encountered transitive
verbs being transformed into potential forms, it feels a bit estranging to see
an intransitive verb take a pseudo-transitive meaning in a potential
construction...^^




Perhaps you're confused by the comma. 「人と同じように手が動いて、物を持つことができる」 as a whole
forms a big relative clause and modifies the following noun, ロボット. Remember
the [usage rule of commas is fairly loose in
Japanese](https://japanese.stackexchange.com/a/23782/5010).

The main structure of the sentence is:

> この中には、ロボットがあります。  
>  Among these, there are robots.

After partially restoring the relative clause:

> この中には、人と同じように手が動くロボットがあります。  
>  Among these, there are robots whose arms can move like humans.  
>  Among these, there are robots that can move their arms like humans.

If you're not sure why this relative clause is possible, remember that you can
always say 「このロボットは手が動く」 in Japanese, using both は and が. (literally "as for
this robot, arms can move" → "this robot can move its arms") Maybe [this
question](https://japanese.stackexchange.com/q/53580/5010) will help, too.

> この中には、人と同じように手が動いて、物を持つことができるロボットがあります。  
>  Among these, there are robots that can move their arms like humans and hold
> things.

Finally, as you expect, this sentence can be safely rephrased using 動かす, the
transitive version of 動く:

> この中には、人と同じように **手を動かして** 物を持つことができるロボットがあります。

