A poor young man lets a traveling girl stay the night in his hut, and ends up marrying her. Two giants compete to build the largest mountain in Japan. A rich man sends a letter to a local priest.  If he'll come to the rich man's house and pray, he'll be given a barrel of rice.
I see.
Me descuidé porque pensé 
que cayó en mi trampa.
Me confié porque creí 
que había caído en mi trampa.
Entendo.