Premise:
"Themes, in turn, can be analyzed within individual sites first, then findings on each theme aggregated across sites."
Hypothesis: Analysis based on each theme aggregated across sites, however, is drastically more effective.

it is not possible to tell

Premise:
"Leave the car behind and take the Porte de la Chapelle line on the m??tro from Concorde to Abbesses."
Hypothesis: You shouldn't take the car from Concorde to Abbesses.

yes

Premise:
"More dramatically, from the high, serpentine road to Oyster Pond from Philipsburg, you'll be stunned by the beauty of Saint-Barthelemy acrosea royal blue swath of the Atlantic."
Hypothesis: The winding road to Oyster Pond is quite dangerous.
it is not possible to tell