story: Elizabeth couldn't wait for her son Sam to take his first steps. She was determined to capture the moment on camera. She wanted to make sure she remembered it perfectly forever. But when Sam finally took his first steps, the camera wasn't charged. Elizabeth didn't mind that much - she knew she'd remember anyway.
 selected sentence: But when Sam finally took his first steps, the camera wasn't charged.
The camera isn't charged >Causes/Enables> Elizabeth charges the camera