yesterday his mobile phone got lost
A topic is the main idea of a writing. In this case, the topic of the essay is Yellowstone National Park because the essay talks about the national park itself.
Romeo finds out about the party, and romeo is invited by the servant if he is not a Montague
This quote has no mention of a deity (divine authority) or society as a whole (civil obedience), and the only mention of gender is the author's reference to his sibling as "brother." The final line "<span>I won't be caught betraying him." drives the assumption that failing to do his "duty to [his] brother" would violate some sort of bond between he and his brother. Since we only know this relationship as familial, we must assume familial loyalty is the theme.</span>