
reference(s) -- payoff(s) / challenge(s) / game(s) / math(s) / plan(s) 
serious / location(s) / experiment(s)
search
--
clock(s)
::
face(s)
/
education(s)
/ now
on
TV
[
]?
serious / location(s) / experiment(s)
search
--
clock(s)
::
face(s)
/
education(s)
/ now
on
TV
[
]?