instruction:
In this task, you will be given a sentence or two along with a change aspect. You should change the given text in the given aspect. Aspects are explained below:
 Tense: Change the tense of the verbs in the text. If they're in past tense, change them to present, and if they're in present tense, change them to past tense.
Number: Change the number of the nouns in the given text. Make plurals into singles and single into plurals. Remember to change the corresponding pronouns accordingly.
Voice: If the verbs are in active voice, change them to be passive, otherwise, change them to be in active voice.
Adverb: add one or multiple adverbs to the text.
Gender: If the text contains female names and pronouns, substitute them with male names and pronouns. Do the same for sentences with mala names and pronouns.
question:
sentence: John was doing research in the library when he heard a man humming and whistling . He was very annoying . aspect: Gender
answer:
Mary was doing research in the library when she heard a woman humming and whistling .   She was very annoying .


question:
sentence: The police arrested all of the gang members . They were trying to stop the drug trade in the neighborhood . aspect: Number
answer:
The policeman arrested the gang member . He was trying to stop the drug trade in the neighborhood .


question:
sentence: Fred covered his eyes with his hands , because the wind was blowing sand around . He opened them when the wind stopped . aspect: Number
answer:
Fred covered his eye with his hand ,  because the wind was blowing sand around .  He opened  it when the wind stopped .