unknown

"The police found an unidentified backpack near the school playground. "

"My knowledge of history helped me understand the current political situation better. "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"She cherished the handmade card her daughter gave her for Mother's Day. "

"My sometimes neighbor, a retired teacher, still visits the school occasionally. "

"The new schedule caused confusion among the students. "

"In the grammar lesson, the teacher explained that "present indeed" is an example of a postpositive. "

"The United States is in an awkward situation with debt default looming."

"He felt like a complete nonentity in the large corporation, lost among thousands of employees. "

"The information about the project deadline resolved my uncertainty; now I know what needs to be completed. "

"I recognised his face immediately."

"The location of the school library is on the second floor. "