Task: Pos Tagging
Input (English): Sentence: When the FLDS under Mr. Jeffs ( and his father before him ) grew to some 10,000 followers in several southwestern communities with estimated assets of $ 110 million ; when it {{ became }} clear that government officials , school authorities , and police in those communities had become intertwined with the sect ; when ex-members increasingly reported child and sexual abuse charges ( mainly involving underage girls forced to marry older men ) ; and when the sect began to use secluded compounds , state and federal authorities started to crack down more vigorously . 
Word: became
Output (English): VBD