Question:
Suddenly Julius grasped his arm, and pointed to where characters were appearing in a faint brown colour.

Does it follow that "His arm was grabbed suddenly by Julius, who pointed at something."?
Answer:
yes

Question:
Jon smiled and turned.

Does it follow that "He walked away still smiling."?
Answer:
it is not possible to tell

Question:
As opposed to the function in the original study, which used median levels.

Does it follow that "The function in the original study uses median levels."?
Answer:
yes

Question:
yeah i'm not old enough to recall that one

Does it follow that "That came out before I was born."?
Answer:
it is not possible to tell