This is the 97th most frequent Latvian word.
tajā
"In it" or "in that."
'Tajā' is used to refer to something inside an object previously mentioned (the book).
Grāmata ir plauktā, un mēs atradām zīmīti tajā.
The book is on the shelf, and we found a note in it.
'Tajā' is used to indicate the same specific location mentioned in the sentence.
Sēžu tajā pašā vietā, kur vakar vakarā.
I am sitting in the same place as last evening.
'Tajā' refers to a particular time period mentioned.